{"id":23922,"date":"2026-09-10T17:19:00","date_gmt":"2026-09-10T17:19:00","guid":{"rendered":"https:\/\/www.gioielleriasessamario.com\/prodotto\/san-ai-ricoh\/"},"modified":"2026-09-24T05:03:28","modified_gmt":"2026-09-24T05:03:28","slug":"rare-san-ai-ricoh-automatic-21-jewels-ricoh-cal-6158","status":"publish","type":"product","link":"https:\/\/www.gioielleriasessamario.com\/en\/product\/rare-san-ai-ricoh-automatic-21-jewels-ricoh-cal-6158\/","title":{"rendered":"Rare San-ai Ricoh Automatic 21 Jewels \u2013 Ricoh Cal. 6158"},"content":{"rendered":"<p dir=\"auto\" data-start=\"53\" data-end=\"366\" class=\"PDq2pG_selectionAnchorContainer\">An appealing San-ai Ricoh Automatic with a distinctive sporty design, rounded case shapes and a silver sunburst dial. Applied indices and the day-date window at 3 o&#8217;clock complete the dial, while the steel bracelet underscores its typically vintage aesthetic. A historically fascinating piece, as the San-ai brand was a satellite brand closely linked to Ricoh Watch Co., one of the historic Japanese \u201cBig Four\u201d watch manufacturers alongside Seiko, Citizen and Orient<\/p>\n<p dir=\"auto\" data-start=\"53\" data-end=\"366\" class=\"PDq2pG_selectionAnchorContainer\"><\/p>\n<p dir=\"auto\" data-start=\"53\" data-end=\"366\" class=\"PDq2pG_selectionAnchorContainer\">\n<ul>\n<li><b>Brand<\/b>: San-ai \/ Ricoh<\/li>\n<li><b>Period<\/b>: Late 1960s, early 1970s<\/li>\n<li><b>Reference<\/b>: 6168<\/li>\n<li><b>Condition<\/b>: Used&nbsp;<\/li>\n<li><b>Movement<\/b>: Self-winding mechanical<\/li>\n<li><b>Calibre<\/b>: Ricoh 6158 with 21 jewels<\/li>\n<li><b>Case<\/b>: Stainless steel<\/li>\n<li><b>Case diameter<\/b>: 37 x 41 mm<\/li>\n<li><b>Dial<\/b>: Silver sunburst with applied indices<\/li>\n<li><b>Bracelet<\/b>: Steel bracelet<\/li>\n<li><b>Buckle<\/b>: Deployant<\/li>\n<li><b>Crown<\/b>: At 3 o&#8217;clock<\/li>\n<li><b>Case back<\/b>: Stainless steel, marked San-ai \u2013 Japan 6168<\/li>\n<li><b>Note<\/b>The cushion (tonneau) case and the silver sunburst dial finish (which reflects light in a radiating pattern) epitomize Space Age style at the turn of the 1960s and 1970s. At the time, space exploration strongly influenced design: angular shapes were abandoned in favor of futuristic, fluid lines reminiscent of cathode-ray television sets or spacecraft portholes.<\/li>\n<\/ul>\n<ul data-start=\"398\" data-end=\"1299\">\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>An appealing San-ai Ricoh Automatic with a distinctive sporty design, rounded case shapes and a silver sunburst dial. Applied indices and the day-date window at 3 o&#8217;clock complete the dial, while the steel bracelet underscores its typically vintage aesthetic. A historically fascinating piece, as the San-ai brand was a satellite brand closely linked to Ricoh [&hellip;]<\/p>\n","protected":false},"featured_media":23923,"template":"","meta":[],"product_brand":[1013],"product_cat":[1344],"product_tag":[],"class_list":["post-23922","product","type-product","status-publish","has-post-thumbnail","product_brand-san-ai","product_cat-watches-en","first","instock","taxable","shipping-taxable","purchasable","product-type-simple","add-to-wishlist-before_image"],"_links":{"self":[{"href":"https:\/\/www.gioielleriasessamario.com\/en\/wp-json\/wp\/v2\/product\/23922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gioielleriasessamario.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.gioielleriasessamario.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gioielleriasessamario.com\/en\/wp-json\/wp\/v2\/media\/23923"}],"wp:attachment":[{"href":"https:\/\/www.gioielleriasessamario.com\/en\/wp-json\/wp\/v2\/media?parent=23922"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.gioielleriasessamario.com\/en\/wp-json\/wp\/v2\/product_brand?post=23922"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.gioielleriasessamario.com\/en\/wp-json\/wp\/v2\/product_cat?post=23922"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.gioielleriasessamario.com\/en\/wp-json\/wp\/v2\/product_tag?post=23922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}