{"product_id":"unsigned-swiss-8-day-pocket-watch-argentan-case-sub-seconds-c-1900","title":"Eight-Day in Argentan, Wound Once a Week, c.1900-1920","description":"\u003cp\u003eA genuine rarity - an 8-day pocket watch that needed winding just once a week. This large 64mm Swiss open-face runs well and presents beautifully.\u003c\/p\u003e\u003cp\u003eThe 8-day pocket watch was always the exception, not the rule. While the standard pocket watch demanded daily winding, the 8-day was built around an oversized mainspring capable of powering the movement for a full week - a genuine engineering difference, not a marketing claim.\u003c\/p\u003e\u003cp\u003eThis Swiss example belongs to a specific and relatively uncommon group: the conventional-dial 8-day. Unlike the famous Hebdomas watches - recognisable by their exposed balance wheel visible through an aperture in the dial - this piece uses a traditional layout with a sub-seconds register at six o'clock. That distinction matters. Hebdomas produced roughly a million examples over a century. Conventional-dial 8-day movements were made in far smaller numbers by other Swiss houses, and are encountered far less often.\u003c\/p\u003e\u003cp\u003eThe Argentan (nickel silver) case is solid and honest, showing minor wear consistent with its age of c.1900-1920. The white enamel dial is in excellent condition - no chips, no cracks, the gilt chapter ring crisp. The gilt brass movement carries a BREVET + Swiss patent mark. It winds smoothly, sets cleanly, and runs.\u003c\/p\u003e","brand":"Unsigned (Swiss)","offers":[{"title":"Default Title","offer_id":54247480492371,"sku":"PW-0044","price":255.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1080\/3121\/3907\/files\/unsigned-swiss-nickel-8-day-pocket-watch-c1900-front.jpg?v=1783611022","url":"https:\/\/estatecollection.nl\/products\/unsigned-swiss-8-day-pocket-watch-argentan-case-sub-seconds-c-1900","provider":"The Estate Collection","version":"1.0","type":"link"}