{"product_id":"000000008255","title":"IWC Ref.648A Big Case Cal. 8531 Automatic, Serviced, 1964, International Watch Co.","description":"\u003cp\u003e\u003cstrong\u003eManufactured in 1964\u003c\/strong\u003e, this is an automatic model of the \"International.\"\u003c\/p\u003e\n\n\u003cp\u003eThe Ref. 648A features a large 36.5mm case.\u003cbr\u003e\nIt is larger and more impressive than other IWC models from the same period.\u003c\/p\u003e\n\n\u003cp\u003eThe dial features a \u003cstrong\u003esunray finish\u003c\/strong\u003e, with fine lines radiating outward.\u003cbr\u003e\nCombined with its raised, domed shape, it creates beautiful shadows from the center to the outer edge, giving it a sense of luxury.\u003cbr\u003e\nThe \"International Watch Co.\" signature in script at the 12 o'clock position evokes a classic vintage atmosphere.\u003c\/p\u003e\n\n\u003cp\u003eThere is a date display at the 3 o'clock position on the dial, with a magnifying lens for the date integrated into the inside of the crystal.\u003cbr\u003e\nThe watch uses bold dauphine hands, providing a strong presence.\u003c\/p\u003e\n\n\u003cp\u003eThe crown is an original IWC part and features the \"fish mark.\"\u003c\/p\u003e\n\n\u003cp\u003eIt is powered by the Cal. 8531 Pellaton automatic movement.\u003cbr\u003e\nThis is a robustly designed movement known for its excellent shock resistance, winding efficiency, and durability.\u003cbr\u003e\nIt does not feature a hacking (seconds-stop) function or a quick-set date mechanism.\u003c\/p\u003e\n\n\n\u003ch4\u003eHow to operate the Cal. 8531\u003c\/h4\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow to pull the crown\u003c\/strong\u003e: Push your fingernail between the case and the crown and move it like a lever.\u003c\/p\u003e\n\n\u003cp style=\"margin-left: 40px;\"\u003eWhen pulling the crown, it is easier to pull by pushing your fingernail into the gap between the crown and the case from the back side.\u003cbr\u003e\nPlease remove the watch from your wrist before operating.\u003cbr\u003e\nOperating gently reduces the burden on the crown and prevents it from coming out.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHand-winding\u003c\/strong\u003e: Rotate clockwise in the normal crown position.\u003cbr\u003e\n\u003cbr\u003e\n\u003cstrong\u003eTime setting\u003c\/strong\u003e: Pull the crown out and rotate clockwise.\u003c\/p\u003e\n\n\u003cp style=\"margin-left: 40px;\"\u003eThe second hand does not stop.\u003c\/p\u003e\n\n\u003ch4\u003eCondition\u003c\/h4\u003e\n\n\u003cp\u003eThis watch has been \u003cspan class=\"marker\"\u003eoverhauled and the exterior finished\u003c\/span\u003e by our store.\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan class=\"marker\"\u003eThe strap is a brand-new Di-Modell piece\u003c\/span\u003e, allowing you to use it with confidence.\u003c\/p\u003e\n\n\u003cp\u003eThere is some aging (patina), spotting, and linear scratches on the dial.\u003cbr\u003e\nThere are minor scratches on the crystal that could not be removed during polishing, but the dial remains highly legible.\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan class=\"marker\"\u003eDue to its age, this watch is non-waterproof.\u003cbr\u003e\nPlease avoid wearing it on rainy or hot days.\u003cbr\u003e\nAlso, please be careful of shocks and magnetism.\u003c\/span\u003e\u003c\/p\u003e","brand":"WATCH COLLE","offers":[{"title":"Default Title","offer_id":56190270636337,"sku":"000000008255-001","price":0.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/4939\/5761\/files\/1_000000008255.jpg?v=1788946915","url":"https:\/\/watch-colle.com\/en\/products\/000000008255","provider":"WATCH COLLE","version":"1.0","type":"link"}