{"product_id":"seiko-chronograph-6139-6012-7-681087","title":"1976 Seiko Automatic Chronograph Ref 6139-6012","description":"\u003cp\u003eThe Seiko Chronograph Ref 6139-6012 is a classic example of Seiko’s groundbreaking 6139 series, powered by one of the world’s first automatic chronograph movements introduced in 1969. Housed in a bold, sporty case typical of the 1970s, the ref. 6139-6012 features a single-register chronograph with a 30-minute counter, along with a practical day-date display. Its in-house caliber 6139 is notable for its innovative column wheel and vertical clutch system—technology that significantly improved chronograph precision and would influence future watchmaking for decades. This reference embodies the era’s design language while remaining a highly collectible piece valued for both its historical importance and everyday usability.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":43667507773686,"sku":"549271","price":495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/9065\/2406\/files\/PhotoApr212026_100147AM.jpg?v=1776982780","url":"https:\/\/www.cwwatchshop.com\/products\/seiko-chronograph-6139-6012-7-681087","provider":"C.W. Watch Shop","version":"1.0","type":"link"}