{"product_id":"genbun-koban-1736-18-au-58","title":"[JK-081]  Genbun Koban 1736-18 AU-58","description":"\u003ctable id=\"tablepress-382-no-3\" class=\"tablepress tablepress-id-382\" style=\"font-size: 0.875rem; width: 100%; height: 204.75px;\"\u003e\n\u003ctbody class=\"row-hover\"\u003e\n\u003ctr class=\"row-1 odd\" style=\"height: 126.375px;\"\u003e\n\u003ctd style=\"width: 38.803%; height: 126.375px;\" class=\"column-1\"\u003eDetail\u003c\/td\u003e\n\u003ctd style=\"width: 60.8498%; height: 126.375px;\" class=\"column-2\"\u003e\n\u003cdiv\u003e\n\u003cspan\u003e●\u003c\/span\u003e\u003cstrong data-end=\"173\" data-start=\"157\"\u003eGenbun Koban\u003c\/strong\u003e is a gold coin issued during the \u003cstrong data-end=\"233\" data-start=\"207\"\u003eGenbun era (1736–1818)\u003c\/strong\u003e under the Tokugawa shogunate, forming part of Japan’s early modern gold currency system. It represents a transitional phase in Edo-period coinage, reflecting monetary adjustments following earlier debasements.\n\u003cp data-end=\"733\" data-start=\"445\"\u003eThe Genbun Koban is composed of a gold–silver alloy with an approximate fineness of \u003cstrong data-end=\"542\" data-start=\"529\"\u003e.653 gold\u003c\/strong\u003e, the remainder being primarily silver.\u003cbr data-end=\"584\" data-start=\"581\"\u003eIt bears the era character \u003cstrong data-end=\"624\" data-start=\"611\"\u003e“Bun” (文)\u003c\/strong\u003e on the reverse, stamped in a regular script style, which serves as the identifying mark of the Genbun issue.\u003c\/p\u003e\n\u003cp data-end=\"896\" data-start=\"735\"\u003e\u003cstrong data-end=\"744\" data-start=\"735\"\u003eDate:\u003c\/strong\u003e \u003cem data-end=\"779\" data-start=\"745\"\u003eND (circa 1736–1818, Edo period)\u003c\/em\u003e\u003cbr data-end=\"782\" data-start=\"779\"\u003eDue to the absence of specific date inscriptions, Genbun Koban are classified as non-dated issues within this era.\u003c\/p\u003e\n\u003cp data-end=\"1245\" data-start=\"898\"\u003eWhile produced in relatively large quantities compared to earlier koban, \u003cstrong data-end=\"1033\" data-start=\"971\"\u003ewell-preserved examples are increasingly difficult to find\u003c\/strong\u003e, particularly those retaining clear stamps, sharp details, and attractive surface texture. As a result, Genbun Koban remain an important and collectible type within the broader series of Edo-period gold coinage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003eGenbun Koban : \u003cstrong\u003ePurity 65.3% \/ 13.00 g\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row-2 even\" style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 38.803%; height: 19.5938px;\" class=\"column-1\"\u003eValue\u003c\/td\u003e\n\u003ctd style=\"width: 60.8498%; height: 19.5938px;\" class=\"column-2\"\u003e1 Ryo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row-3 odd\" style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 38.803%; height: 19.5938px;\" class=\"column-1\"\u003eCondition\u003c\/td\u003e\n\u003ctd style=\"width: 60.8498%; height: 19.5938px;\" class=\"column-2\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row-4 even\" style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 38.803%; height: 19.5938px;\" class=\"column-1\"\u003eYear\u003c\/td\u003e\n\u003ctd style=\"width: 60.8498%; height: 19.5938px;\" class=\"column-2\"\u003e\u003cem data-end=\"779\" data-start=\"745\"\u003e1736–1818\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"row-7 odd\" style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 38.803%; height: 19.5938px;\" class=\"column-1\"\u003eControl Number\u003c\/td\u003e\n\u003ctd style=\"width: 60.8498%; height: 19.5938px;\" class=\"column-2\"\u003eJK-081\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"TNT Store","offers":[{"title":"Default Title","offer_id":52987251720514,"sku":null,"price":900000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/9250\/3874\/files\/6EBFCF3C-29CE-4B82-90BA-A7D7AB12005C.jpg?v=1777572212","url":"https:\/\/tntcoin-store.com\/products\/genbun-koban-1736-18-au-58","provider":"TNT Store","version":"1.0","type":"link"}