{"product_id":"iwcアイダブリューシー-70s-schaffhausen-シャフハウゼン-cal-8541b","title":"IWC (International Watch Company) 70's \/ SCHAFFHAUSEN \/ Cal.8541b","description":"\u003ctable width=\"100%\" border=\"1\" style=\"width: 100%; height: 548.625px;\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003cth style=\"width: 99.5798%; height: 19.5938px;\" colspan=\"2\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cb\u003e\u003cspan style=\"color: #0f000d;\" color=\"#0F000D\"\u003eProduct Details\u003c\/span\u003e\u003c\/b\u003e\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003cth style=\"width: 6.30252%; height: 39.1875px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eYear of Manufacture\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 39.1875px;\" bgcolor=\"#FFFEFC\"\u003e\n\n\u003cp\u003e1970\u003c\/p\u003e\n\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\n\u003cth style=\"width: 6.30252%; height: 58.7812px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eMovement\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 58.7812px;\" bgcolor=\"#FFFEFC\"\u003e\n\n\u003cspan lang=\"EN-US\"\u003eCal.8541b \/ Automatic\u003c\/span\u003e\u003cbr\u003e\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\n\u003cth style=\"width: 6.30252%; height: 58.7812px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eCase Size\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 58.7812px;\" bgcolor=\"#FFFEFC\"\u003e\n\n\u003cp\u003e\u003cspan\u003e40.1mm (including lugs) \/ 37.9mm (including crown) \/ 11mm thick \/ 19mm lug width \/ 47g (including strap)\u003c\/span\u003e\u003c\/p\u003e\n\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\n\u003cth style=\"width: 6.30252%; height: 58.7812px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eCase Material\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 58.7812px; text-align: left;\" bgcolor=\"#FFFEFC\"\u003e SS (Stainless Steel)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003cth style=\"width: 6.30252%; height: 39.1875px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eAccessories\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 39.1875px;\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eWatch \/ RESUME Original Case \/ Our Warranty (1 year free warranty)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003cth style=\"width: 6.30252%; height: 19.5938px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eCondition\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 19.5938px;\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003e Antique (Used) \u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003cth style=\"width: 6.30252%; height: 39.1875px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eWater Resistance\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 39.1875px;\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003e Not Waterproof \u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 215.531px;\"\u003e\n\n\u003ctd style=\"width: 6.30252%; height: 215.531px;\" align=\"center\"\u003eNote\u003c\/td\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 215.531px;\"\u003e*This product will be overhauled after your order, so shipping will take approximately 1-2 months.\u003cbr\u003ePlease be aware of this.\u003cbr\u003e\u003cbr\u003e*Colors may appear slightly different on screen than in real life. Please understand.\u003cbr\u003e\u003cbr\u003e*This product is also sold in stores. We update our stock numbers regularly, but there may be times when an item you have purchased is out of stock. In the unlikely event that an item is unavailable, we may cancel your order. Thank you for your understanding.\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eIntroducing the 1970 IWC \"Schaffhausen.\"\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIWC was founded in 1868 by American watchmaker Florentine Ariosto Jones in Schaffhausen, a city in northern Switzerland.\u003c\/p\u003e\n\u003cp\u003eThe brand's origin lies in its aim to create highly accurate and durable watches by combining the rational production techniques developed in America at the time with the skilled craftsmanship passed down in Switzerland.\u003c\/p\u003e\n\u003cp\u003eSince then, it has maintained its focus on practicality and robustness, rather than relying on elaborate decorations.\u003cbr\u003eIn the 1940s, under technical director Albert Pellaton, IWC developed its unique automatic winding mechanism, which evolved into one of the brand's iconic technologies.\u003c\/p\u003e\n\u003cp\u003eIn the Japanese vintage market, elegant watches with \"SCHAFFHAUSEN\" written on their dials are affectionately known as \"Schaffhausen,\" named after the company's birthplace.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e■ Dial and Case Design\u003c\/strong\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe dial is a deep navy blue.\u003cbr\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003eIt features a sunray finish that radiates light from the center to the outer edge, displaying a rich gradation from vivid blue to calm deep blue depending on the angle.\u003c\/p\u003e\n\u003cp\u003eAmong IWC watches of that era, which often featured silver or white dials, this navy dial is a rare specification with limited distribution.\u003c\/p\u003e\n\u003cp\u003eThe hour markers are slender, three-dimensional applied bar indexes.\u003cbr\u003eTheir sharp, light-reflecting facets create a subtle presence against the deep blue.\u003c\/p\u003e\n\u003cp\u003eThe three-dimensional \"IWC\" logo is positioned at 12 o'clock.\u003cbr\u003eBelow it, \"International Watch Co.\" and \"SCHAFFHAUSEN\" in script add a vintage touch to the refined dial.\u003c\/p\u003e\n\u003cp\u003eThe case has a cushion shape that evokes a hybrid between a round and square form.\u003cbr\u003eIt's a distinctive 1970s design, combining a soft, rounded outline with straight lugs and a powerful surface composition.\u003c\/p\u003e\n\u003cp\u003eWhile appearing to have a comfortable volume from the front, the sides are finished with a smooth, thin line, making it a unique design that sits neatly on the wrist.\u003c\/p\u003e\n\u003cp\u003eFurthermore, the crown is engraved with a fish motif, commonly known as the \"fish crown.\"\u003cbr\u003eThis distinctive detail was used on waterproof IWC watches at the time, allowing you to feel the original charm not only from the case and dial but also from the finer details.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003e■ Movement\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0762\/8980\/2535\/files\/2026-08-01T190051.612.png?v=1785580357\" alt=\"\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe movement is the automatic Cal.8541B.\u003cbr\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003eIt is one of IWC's signature in-house movements, tracing its lineage back to the Cal.85 series that appeared in the 1950s.\u003c\/p\u003e\n\u003cp\u003eIts most distinctive feature is the \"Pellaton automatic winding system\" developed by Albert Pellaton.\u003cbr\u003eThis unique structure uses two pawls to transmit the rotor's motion to the mainspring, allowing it to wind regardless of the rotor's direction of rotation.\u003c\/p\u003e\n\u003cp\u003eNot only can it efficiently convert even slight arm movements into power, but it also features a robust design with fewer components. It is a highly practical mechanism designed for long-term use and maintenance.\u003c\/p\u003e\n\u003cp\u003eIt vibrates at 19,800 beats per hour and has a power reserve of approximately 44 hours.\u003cbr\u003eThe date display includes a semi-quick-set mechanism, allowing the date to advance by moving the hands back and forth around midnight.\u003c\/p\u003e\n\u003cp\u003eThe rotor is engraved with \"INTERNATIONAL WATCH CO. SWISS,\" revealing meticulous craftsmanship even in parts normally hidden inside the case.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e■ Styling\u003cbr\u003e\u003c\/strong\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCase size: 40.1mm (including lugs) \/ 37.9mm (including crown) \/ 11mm thick \/ 47g (including strap)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThis model, with its deep navy dial paired with a black leather strap, is a perfect match for subdued colored outfits.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWhen worn with a white shirt and a gray or navy jacket, the blue of the dial adds a subtle splash of color to the cuffs, creating a refined and intellectual impression.\u003cbr\u003eThe stainless steel case and silver indexes catch the light, subtly yet elegantly enhancing the wrist.\u003c\/p\u003e\n\u003cp\u003eFor a casual look, we recommend muted outfits such as a charcoal gray knit or cardigan, or dark navy jeans.\u003c\/p\u003e\n\u003cp\u003eThe cushion case, characteristic of the 1970s, possesses a classical elegance while also offering a distinctive presence not found in typical round cases, making it suitable for both jacket styles and everyday wear.\u003c\/p\u003e\n\u003cp\u003eIt's a piece that allows you to enjoy the elegance and individuality unique to vintage IWC, without being overly formal and easily integrated into daily attire.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e■ Condition\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe condition is excellent, with no noticeable tarnishing or corrosion on the dial, and the navy color and all markings remain clear.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe case shows minor scratches and slight damage from age and use, primarily on the bezel, but there are no significant dents or chips that would severely detract from its appearance.\u003cbr\u003eIt is in a condition that shows a natural level of wear for a vintage watch, posing no issues for wear.\u003c\/p\u003e\n\u003cp\u003eSome minor rust is visible on the movement, but it will be removed as much as possible during the overhaul, which includes disassembly, cleaning, lubrication, and adjustment of all parts.\u003c\/p\u003e\n\u003cp\u003eIt is currently running well, and all functions are operating without problems.\u003cbr\u003eWe will deliver it in a condition ready for you to use with confidence after maintenance is completed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"EN-US\"\u003e\u003cstrong\u003e■ To purchase with confidence\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eAll watches handled by our store are inspected internally by a professional watchmaker upon arrival and are sold only after being confirmed as genuine, so you can use our service with confidence.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWhen you purchase a watch, we will attach a new leather strap from our store.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePlease select your desired color from the order selection tab.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e*For watches with original straps or metal bands, the leather strap will be sent separately as a spare and not attached.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWe will also send a dedicated watch case at the time of shipping.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan style=\"color: #ff0000; font-size: xx-small;\" size=\"1\" color=\"#ff0000\"\u003e● Important information after purchasing an antique watch, please read carefully ●\u003cbr\u003e\u003cbr\u003eAt RESUME, when selling antique watches, we do not immediately hand them over upon receiving your order.\u003cbr\u003eInstead, we request an overhaul (OH) from a specialized craftsman, and delivery will be made after the OH is completed. (This usually takes about 1-2 months.)\u003cbr\u003e\u003cbr\u003eA professional craftsman, certified as a Class 1 watch repair technician, will completely disassemble the watch, replace consumable parts such as internal gaskets, clean, lubricate, and thoroughly overhaul it,\u003cbr\u003eadjusting it to a daily rate of approximately ±1 minute.\u003cbr\u003eAdditionally, upon delivery, we will include our unique OH certificate detailing the work performed, along with photos of the disassembled and serviced movement.\u003cbr\u003e\u003cbr\u003eOf course, due to the nature of the product being used, there is no absolute guarantee that it will never break. However, we take these measures to ensure that you can enjoy the watch's original performance and use it with peace of mind in the future.\u003cbr\u003e\u003cbr\u003eWhen purchasing a product, a 1-year warranty period is provided depending on the model. Even for products outside the warranty period, we offer repair services for a fee.\u003cbr\u003ePlease feel free to contact us even if you do not have a repair shop nearby.\u003c\/span\u003e\u003c\/p\u003e\u003cbr\u003e","brand":"RESUME","offers":[{"title":"Black","offer_id":51769034670375,"sku":null,"price":382800.0,"currency_code":"JPY","in_stock":true},{"title":"Brown","offer_id":51769034703143,"sku":null,"price":382800.0,"currency_code":"JPY","in_stock":true},{"title":"Navy","offer_id":51769034735911,"sku":null,"price":382800.0,"currency_code":"JPY","in_stock":true},{"title":"Wine","offer_id":51769034768679,"sku":null,"price":382800.0,"currency_code":"JPY","in_stock":true},{"title":"Chestnut","offer_id":51769034801447,"sku":null,"price":382800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/8980\/2535\/files\/2026-08-01T190428.169.png?v=1785580345","url":"https:\/\/vintage-watch-resume.com\/en\/products\/iwc%e3%82%a2%e3%82%a4%e3%83%80%e3%83%96%e3%83%aa%e3%83%a5%e3%83%bc%e3%82%b7%e3%83%bc-70s-schaffhausen-%e3%82%b7%e3%83%a3%e3%83%95%e3%83%8f%e3%82%a6%e3%82%bc%e3%83%b3-cal-8541b","provider":"RESUME","version":"1.0","type":"link"}