{"id":4540,"date":"2026-06-26T09:00:00","date_gmt":"2026-06-26T00:00:00","guid":{"rendered":"https:\/\/selected-japanese-swords.com\/ifu-fr\/?p=4540"},"modified":"2026-06-23T11:59:05","modified_gmt":"2026-06-23T02:59:05","slug":"ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir","status":"publish","type":"post","link":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/","title":{"rendered":"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir"},"content":{"rendered":"<h1>Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir<\/h1>\n<p>Parmi les l\u00e9gendaires forgerons de sabres de la p\u00e9riode Shinto au Japon, rares sont les noms qui inspirent autant de respect que celui d&#8217;Ikkanshi Tadatsuna. Ses lames repr\u00e9sentent un sommet de l&#8217;art du forgeage durant l&#8217;\u00e8re Edo, alliant l&#8217;esth\u00e9tique classique d&#8217;Awataguchi \u00e0 des innovations techniques qui fascinent encore les collectionneurs des si\u00e8cles plus tard. Pourtant, pour de nombreux passionn\u00e9s en dehors du Japon, l&#8217;histoire de ce ma\u00eetre forgeron reste fragmentaire et mal comprise. Cet article explore la vie, la lign\u00e9e et l&#8217;h\u00e9ritage durable d&#8217;Ikkanshi Tadatsuna \u2014 et les raisons pour lesquelles son \u0153uvre continue de d\u00e9finir la r\u00e9f\u00e9rence en mati\u00e8re de sabres de l&#8217;\u00e8re Shinto.<\/p>\n<h2>Qui \u00e9tait Ikkanshi Tadatsuna ?<\/h2>\n<p>Ikkanshi Tadatsuna est le nom le plus couramment associ\u00e9 au <strong>Awataguchi Omi no Kami Tadatsuna de deuxi\u00e8me g\u00e9n\u00e9ration<\/strong>, un forgeron de sabres qui exer\u00e7ait dans la province de Settsu (l&#8217;actuelle Osaka) au milieu de la p\u00e9riode Edo, approximativement de la fin du XVIIe au d\u00e9but du XVIIIe si\u00e8cle. Il est largement consid\u00e9r\u00e9 comme le plus accompli de la lign\u00e9e des Tadatsuna, et le titre \u00ab Ikkanshi \u00bb (\u4e00\u7aff\u5b50) \u2014 un nom d&#8217;art po\u00e9tique signifiant \u00ab ma\u00eetre \u00e0 une canne \u00bb \u2014 est devenu pratiquement indissociable de son identit\u00e9.<\/p>\n<p>Le Tadatsuna de premi\u00e8re g\u00e9n\u00e9ration \u00e9tablit le nom de famille et re\u00e7ut le prestigieux titre d&#8217;<em>Omi no Kami<\/em> (\u8fd1\u6c5f\u5b88), un titre provincial honorifique accord\u00e9 aux artisans de talent. Mais c&#8217;est son successeur, la deuxi\u00e8me g\u00e9n\u00e9ration, qui \u00e9leva la r\u00e9putation de l&#8217;\u00e9cole \u00e0 des sommets extraordinaires. Travaillant \u00e0 une \u00e9poque o\u00f9 Osaka \u00e9tait l&#8217;un des premiers centres de fabrication de sabres au Japon, Ikkanshi Tadatsuna se hissa aux c\u00f4t\u00e9s de g\u00e9ants tels qu&#8217;<strong>Inoue Shinkai<\/strong> et <strong>Tanba no Kami Yoshimichi<\/strong> en tant que l&#8217;un des plus grands forgerons de la tradition Shinto d&#8217;Osaka.<\/p>\n<h2>L&#8217;\u00e9cole Tadatsuna et sa place dans l&#8217;\u00e8re Shinto<\/h2>\n<p>Pour comprendre l&#8217;importance d&#8217;Ikkanshi Tadatsuna, il est utile de le situer dans le contexte plus large de la p\u00e9riode de fabrication des sabres Shinto. L&#8217;\u00e8re Shinto (approximativement 1596\u20131781) fut marqu\u00e9e par un changement radical dans la production de sabres japonais. Alors que le pays entrait dans une p\u00e9riode de paix prolong\u00e9e sous le shogunat Tokugawa, les forgerons perfectionn\u00e8rent leurs techniques et s&#8217;inspir\u00e8rent souvent des grands ma\u00eetres de l&#8217;\u00e8re Koto, tout en d\u00e9veloppant des styles r\u00e9solument nouveaux.<\/p>\n<h3>Osaka, capitale de la forge de sabres<\/h3>\n<p>Osaka s&#8217;imposa comme l&#8217;une des sept grandes r\u00e9gions de fabrication de sabres durant la p\u00e9riode Shinto. L&#8217;\u00e9conomie florissante de la ville, sa culture marchande et sa proximit\u00e9 avec le pouvoir politique de Kyoto en faisaient un p\u00f4le d&#8217;attraction pour les artisans de talent. La tradition d&#8217;Osaka est r\u00e9put\u00e9e pour produire des sabres d&#8217;une beaut\u00e9 exceptionnelle, avec des <em>hamon<\/em> (lignes de trempe) \u00e9clatants et vifs, ainsi qu&#8217;un <em>jigane<\/em> (surface de l&#8217;acier) raffin\u00e9. L&#8217;\u0153uvre d&#8217;Ikkanshi Tadatsuna incarne cette tradition \u00e0 son plus haut niveau.<\/p>\n<h3>La connexion avec Awataguchi<\/h3>\n<p>L&#8217;\u00e9cole Tadatsuna revendiquait une filiation avec l&#8217;illustre <strong>\u00e9cole Awataguchi<\/strong> de Kyoto, l&#8217;une des lign\u00e9es de forgerons les plus v\u00e9n\u00e9r\u00e9es de la p\u00e9riode Kamakura. En invoquant le nom d&#8217;Awataguchi dans leurs signatures \u2014 g\u00e9n\u00e9ralement libell\u00e9es <em>Awataguchi Omi no Kami Tadatsuna<\/em> \u2014 les forgerons de cette \u00e9cole se positionnaient comme les h\u00e9ritiers d&#8217;une tradition s\u00e9culaire. Bien que la filiation directe fasse l&#8217;objet de d\u00e9bats parmi les \u00e9rudits, cette aspiration en elle-m\u00eame t\u00e9moigne de la profonde v\u00e9n\u00e9ration que les forgerons de l&#8217;\u00e8re Shinto portaient \u00e0 leurs pr\u00e9d\u00e9cesseurs de l&#8217;\u00e8re Koto.<\/p>\n<h2>Caract\u00e9ristiques des lames d&#8217;Ikkanshi Tadatsuna<\/h2>\n<p>Les collectionneurs prisent les sabres d&#8217;Ikkanshi Tadatsuna pour plusieurs qualit\u00e9s distinctives qui les d\u00e9marquent des \u0153uvres de ses contemporains.<\/p>\n<h3>Sugata (Forme)<\/h3>\n<p>Ses katana et wakizashi pr\u00e9sentent g\u00e9n\u00e9ralement un <em>sugata<\/em> \u00e9l\u00e9gant avec une courbure mod\u00e9r\u00e9e (<em>sori<\/em>) et une largeur bien proportionn\u00e9e. Bon nombre de ses lames les plus longues refl\u00e8tent les id\u00e9aux esth\u00e9tiques gracieux de l&#8217;\u00e9cole d&#8217;Osaka, en \u00e9quilibre entre fonctionnalit\u00e9 martiale et raffinement visuel. Le <em>kissaki<\/em> (pointe) est souvent de longueur moyenne, contribuant \u00e0 un sentiment g\u00e9n\u00e9ral d&#8217;harmonie.<\/p>\n<h3>Jigane (Acier)<\/h3>\n<p>Le motif de forgeage des lames d&#8217;Ikkanshi Tadatsuna pr\u00e9sente g\u00e9n\u00e9ralement un <em>ko-itame hada<\/em> (motif de grain de bois fin) serr\u00e9 et raffin\u00e9, parfois agr\u00e9ment\u00e9 d&#8217;\u00e9l\u00e9ments de <em>mokume<\/em>. La surface de l&#8217;acier poss\u00e8de un \u00e9clat et une clart\u00e9 caract\u00e9ristiques du travail d&#8217;Osaka, souvent d\u00e9crite comme ayant une qualit\u00e9 lumineuse, presque semblable \u00e0 celle d&#8217;un joyau.<\/p>\n<h3>Hamon (Ligne de trempe)<\/h3>\n<p>La caract\u00e9ristique la plus c\u00e9l\u00e8bre de ses lames est sans doute le <em>hamon<\/em>. Ikkanshi Tadatsuna \u00e9tait un ma\u00eetre du motif <strong><em>toran-ba<\/em><\/strong> (vague d\u00e9ferlante) \u2014 une ligne de trempe audacieuse et ondulante \u00e9voquant des vagues qui se brisent. Ce style spectaculaire est devenu la signature de son \u0153uvre. Il produisait \u00e9galement des motifs <em>gunome-midare<\/em> et <em>choji-midare<\/em> d&#8217;une exquise activit\u00e9 en <em>nioi<\/em> et <em>nie<\/em>, t\u00e9moignant d&#8217;une ma\u00eetrise remarquable du processus de trempe.<\/p>\n<h3>Horimono (Gravures)<\/h3>\n<p>Certaines de ses lames pr\u00e9sentent des gravures <em>horimono<\/em>, et ses signatures comportent parfois la mention <em>hori-d\u014dsaku<\/em>, indiquant que les gravures \u00e9taient r\u00e9alis\u00e9es de sa propre main plut\u00f4t que par un sp\u00e9cialiste. Ce d\u00e9tail est notable car de nombreux forgerons sous-traitaient le travail de gravure, et la capacit\u00e9 d&#8217;un forgeron \u00e0 r\u00e9aliser ses propres horimono \u00e9tait consid\u00e9r\u00e9e comme le signe d&#8217;une polyvalence exceptionnelle.<\/p>\n<h2>Mei (Signature) et authentification<\/h2>\n<p>La signature standard d&#8217;Ikkanshi Tadatsuna se lit <strong>\u7c9f\u7530\u53e3\u8fd1\u6c5f\u5b88\u5fe0\u7db1<\/strong> (<em>Awataguchi Omi no Kami Tadatsuna<\/em>), souvent accompagn\u00e9e du nom d&#8217;art <strong>\u4e00\u7aff\u5b50<\/strong> (<em>Ikkanshi<\/em>). Les exemplaires dat\u00e9s de sa p\u00e9riode d&#8217;activit\u00e9 \u2014 tels que les lames portant des dates de l&#8217;\u00e8re <em>H\u014dei<\/em> (1704\u20131711) \u2014 sont particuli\u00e8rement pris\u00e9s des collectionneurs car ils fournissent un contexte historique pr\u00e9cis.<\/p>\n<p>Comme pour tous les forgerons tr\u00e8s recherch\u00e9s, des contrefa\u00e7ons et des copies ult\u00e9rieures existent. Les acheteurs potentiels devraient toujours rechercher des lames accompagn\u00e9es d&#8217;une certification du <strong>NBTHK<\/strong> (Nihon Bijutsu Token Hozon Kyokai) \u2014 id\u00e9alement des papiers <em>Tokubetsu Hozon<\/em> ou <em>Juyo Token<\/em> \u2014 pour confirmer l&#8217;authenticit\u00e9. L&#8217;\u00e9tat de la soie (<em>nakago<\/em>), la patine, les marques de lime (<em>yasurime<\/em>) et le style des caract\u00e8res jouent tous un r\u00f4le essentiel dans le processus d&#8217;authentification.<\/p>\n<h2>H\u00e9ritage et collectibilit\u00e9<\/h2>\n<p>Ikkanshi Tadatsuna est syst\u00e9matiquement class\u00e9 parmi les meilleurs forgerons Shinto d&#8217;Osaka. Son \u0153uvre a \u00e9t\u00e9 d\u00e9sign\u00e9e <em>Juyo Token<\/em> (Sabre Important) \u00e0 de multiples reprises, et de beaux exemplaires apparaissent occasionnellement aux plus hauts niveaux de l&#8217;expertise en sabres japonais. Pour les collectionneurs, acqu\u00e9rir une lame authentique d&#8217;Ikkanshi Tadatsuna repr\u00e9sente la possession d&#8217;un fragment de l&#8217;histoire de l&#8217;art japonais \u2014 un fragment qui fait le lien entre l&#8217;id\u00e9al classique d&#8217;Awataguchi et la vibrante tradition d&#8217;Osaka.<\/p>\n<p>Les valeurs marchandes de ses lames refl\u00e8tent ce prestige. Bien qu&#8217;elles n&#8217;atteignent pas tout \u00e0 fait les prix astronomiques des plus grandes \u0153uvres de l&#8217;\u00e8re Koto, les sabres de haute qualit\u00e9 d&#8217;Ikkanshi Tadatsuna se n\u00e9gocient \u00e0 des sommes consid\u00e9rables, en particulier ceux dot\u00e9s d&#8217;une provenance distingu\u00e9e, d&#8217;un excellent \u00e9tat de conservation et d&#8217;une certification solide.<\/p>\n<h2>O\u00f9 trouver des sabres authentiques d&#8217;Ikkanshi Tadatsuna<\/h2>\n<p>Pour les collectionneurs \u00e0 la recherche de sabres japonais authentiques \u2014 qu&#8217;il s&#8217;agisse d&#8217;un chef-d&#8217;\u0153uvre d&#8217;Ikkanshi Tadatsuna ou d&#8217;autres forgerons de renom \u2014 s&#8217;approvisionner aupr\u00e8s de marchands r\u00e9put\u00e9s est essentiel. Chez <strong>Ifu<\/strong>, nous proposons une s\u00e9lection soigneusement choisie de sabres japonais authentiques, chacun v\u00e9rifi\u00e9 en termes de qualit\u00e9 et de provenance, garantissant aux collectionneurs un achat en toute confiance.<\/p>\n<p>Que vous soyez un collectionneur aguerri ou que vous d\u00e9butiez votre voyage dans le monde du nihonto, comprendre des forgerons comme Ikkanshi Tadatsuna approfondit votre appr\u00e9ciation de l&#8217;art, de l&#8217;histoire et de l&#8217;\u00e2me forg\u00e9s dans chaque lame. Son \u0153uvre constitue la preuve durable que les forgerons de l&#8217;\u00e8re Shinto n&#8217;\u00e9taient pas de simples artisans \u2014 ils \u00e9taient des artistes du plus haut rang.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>D\u00e9couvrez l&#8217;h\u00e9ritage d&#8217;Ikkanshi Tadatsuna, le ma\u00eetre forgeron Shinto d&#8217;Osaka. Apprenez-en plus sur les caract\u00e9ristiques de ses lames, ses signatures et ce que les collectionneurs appr\u00e9cient le plus.<\/p>\n","protected":false},"author":1,"featured_media":4560,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","omw_enable_modal_window":"enable","ofc_meta_disable_footer_callout":"","ofc_meta_callout_button_url":"","ofc_meta_callout_button_txt":"","ofc_meta_callout_text":"","osh_disable_topbar_sticky":"default","osh_disable_header_sticky":"default","osh_sticky_header_style":"default","osh_sticky_header_effect":"","osh_custom_sticky_logo":0,"osh_custom_retina_sticky_logo":0,"osh_custom_sticky_logo_height":0,"osh_background_color":"","osh_links_color":"","osh_links_hover_color":"","osh_links_active_color":"","osh_links_bg_color":"","osh_links_hover_bg_color":"","osh_links_active_bg_color":"","osh_menu_social_links_color":"","osh_menu_social_hover_links_color":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[47],"tags":[],"class_list":["post-4540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-smiths-history","entry","has-media","owp-thumbs-layout-horizontal","owp-btn-big","owp-tabs-layout-horizontal","has-no-thumbnails","has-product-nav"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir - \u5a01\u98a8 Ifu - The Authentic Katana<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir - \u5a01\u98a8 Ifu - The Authentic Katana\" \/>\n<meta property=\"og:description\" content=\"D\u00e9couvrez l&#039;h\u00e9ritage d&#039;Ikkanshi Tadatsuna, le ma\u00eetre forgeron Shinto d&#039;Osaka. Apprenez-en plus sur les caract\u00e9ristiques de ses lames, ses signatures et ce que les collectionneurs appr\u00e9cient le plus.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/\" \/>\n<meta property=\"og:site_name\" content=\"\u5a01\u98a8 Ifu - The Authentic Katana\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/people\/Ifu-The-Authentic-Katana\/61579072987458\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-26T00:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2026\/06\/ikkanshi-tadatsuna-1024x683.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"683\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"\u5a01\u98a8 Ifu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u5a01\u98a8 Ifu\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/\"},\"author\":{\"name\":\"\u5a01\u98a8 Ifu\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#\\\/schema\\\/person\\\/5176226e91ab779c3242bc838699a8b2\"},\"headline\":\"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir\",\"datePublished\":\"2026-06-26T00:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/\"},\"wordCount\":1431,\"publisher\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/ikkanshi-tadatsuna.png\",\"articleSection\":[\"Smiths &amp; History\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/\",\"url\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/\",\"name\":\"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir - \u5a01\u98a8 Ifu - The Authentic Katana\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/ikkanshi-tadatsuna.png\",\"datePublished\":\"2026-06-26T00:00:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/#primaryimage\",\"url\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/ikkanshi-tadatsuna.png\",\"contentUrl\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/ikkanshi-tadatsuna.png\",\"width\":1536,\"height\":1024},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#website\",\"url\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/\",\"name\":\"\u5a01\u98a8 Ifu - The Authentic Katana\",\"description\":\"real antique katana from Japan\",\"publisher\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#organization\",\"name\":\"\u5a01\u98a8 Ifu\",\"url\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/logo-yoko2-badk.png\",\"contentUrl\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/logo-yoko2-badk.png\",\"width\":800,\"height\":200,\"caption\":\"\u5a01\u98a8 Ifu\"},\"image\":{\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/people\\\/Ifu-The-Authentic-Katana\\\/61579072987458\\\/\",\"https:\\\/\\\/www.instagram.com\\\/ifu_the_authentic_katana\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/#\\\/schema\\\/person\\\/5176226e91ab779c3242bc838699a8b2\",\"name\":\"\u5a01\u98a8 Ifu\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ba63f124df2c5ed7bee2f724393c0cd3bb9d7e5cfc45691e1304e020e4bb9e69?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ba63f124df2c5ed7bee2f724393c0cd3bb9d7e5cfc45691e1304e020e4bb9e69?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/ba63f124df2c5ed7bee2f724393c0cd3bb9d7e5cfc45691e1304e020e4bb9e69?s=96&d=mm&r=g\",\"caption\":\"\u5a01\u98a8 Ifu\"},\"url\":\"https:\\\/\\\/selected-japanese-swords.com\\\/ifu-fr\\\/author\\\/sjs\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir - \u5a01\u98a8 Ifu - The Authentic Katana","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/","og_locale":"en_US","og_type":"article","og_title":"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir - \u5a01\u98a8 Ifu - The Authentic Katana","og_description":"D\u00e9couvrez l'h\u00e9ritage d'Ikkanshi Tadatsuna, le ma\u00eetre forgeron Shinto d'Osaka. Apprenez-en plus sur les caract\u00e9ristiques de ses lames, ses signatures et ce que les collectionneurs appr\u00e9cient le plus.","og_url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/","og_site_name":"\u5a01\u98a8 Ifu - The Authentic Katana","article_publisher":"https:\/\/www.facebook.com\/people\/Ifu-The-Authentic-Katana\/61579072987458\/","article_published_time":"2026-06-26T00:00:00+00:00","og_image":[{"width":1024,"height":683,"url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2026\/06\/ikkanshi-tadatsuna-1024x683.png","type":"image\/png"}],"author":"\u5a01\u98a8 Ifu","twitter_card":"summary_large_image","twitter_misc":{"Written by":"\u5a01\u98a8 Ifu","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/#article","isPartOf":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/"},"author":{"name":"\u5a01\u98a8 Ifu","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#\/schema\/person\/5176226e91ab779c3242bc838699a8b2"},"headline":"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir","datePublished":"2026-06-26T00:00:00+00:00","mainEntityOfPage":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/"},"wordCount":1431,"publisher":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#organization"},"image":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/#primaryimage"},"thumbnailUrl":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2026\/06\/ikkanshi-tadatsuna.png","articleSection":["Smiths &amp; History"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/","url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/","name":"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir - \u5a01\u98a8 Ifu - The Authentic Katana","isPartOf":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/#primaryimage"},"image":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/#primaryimage"},"thumbnailUrl":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2026\/06\/ikkanshi-tadatsuna.png","datePublished":"2026-06-26T00:00:00+00:00","breadcrumb":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/#primaryimage","url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2026\/06\/ikkanshi-tadatsuna.png","contentUrl":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2026\/06\/ikkanshi-tadatsuna.png","width":1536,"height":1024},{"@type":"BreadcrumbList","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/ikkanshi-tadatsuna-ce-que-tout-collectionneur-devrait-savoir\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/selected-japanese-swords.com\/ifu-fr\/"},{"@type":"ListItem","position":2,"name":"Ikkanshi Tadatsuna : Ce que tout collectionneur devrait savoir"}]},{"@type":"WebSite","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#website","url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/","name":"\u5a01\u98a8 Ifu - The Authentic Katana","description":"real antique katana from Japan","publisher":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/selected-japanese-swords.com\/ifu-fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#organization","name":"\u5a01\u98a8 Ifu","url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#\/schema\/logo\/image\/","url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2025\/12\/logo-yoko2-badk.png","contentUrl":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-content\/uploads\/2025\/12\/logo-yoko2-badk.png","width":800,"height":200,"caption":"\u5a01\u98a8 Ifu"},"image":{"@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/people\/Ifu-The-Authentic-Katana\/61579072987458\/","https:\/\/www.instagram.com\/ifu_the_authentic_katana\/"]},{"@type":"Person","@id":"https:\/\/selected-japanese-swords.com\/ifu-fr\/#\/schema\/person\/5176226e91ab779c3242bc838699a8b2","name":"\u5a01\u98a8 Ifu","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/ba63f124df2c5ed7bee2f724393c0cd3bb9d7e5cfc45691e1304e020e4bb9e69?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/ba63f124df2c5ed7bee2f724393c0cd3bb9d7e5cfc45691e1304e020e4bb9e69?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ba63f124df2c5ed7bee2f724393c0cd3bb9d7e5cfc45691e1304e020e4bb9e69?s=96&d=mm&r=g","caption":"\u5a01\u98a8 Ifu"},"url":"https:\/\/selected-japanese-swords.com\/ifu-fr\/author\/sjs\/"}]}},"_links":{"self":[{"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/posts\/4540","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/comments?post=4540"}],"version-history":[{"count":1,"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/posts\/4540\/revisions"}],"predecessor-version":[{"id":4561,"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/posts\/4540\/revisions\/4561"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/media\/4560"}],"wp:attachment":[{"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/media?parent=4540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/categories?post=4540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/selected-japanese-swords.com\/ifu-fr\/wp-json\/wp\/v2\/tags?post=4540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}