{"product_id":"omega-オメガ-54s-seamaster-cal-491","title":"OMEGA 54's \/ Seamaster \/ Cal.491 ","description":"\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e Introducing the Omega Seamaster, made in \u003cspan lang=\"EN-US\"\u003e1954\u003c\/span\u003e . \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e Water and dust resistance in watches had long been a major issue, but with the outbreak of World War II, demand for them increased rapidly.\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003c\/span\u003e At the time, Omega supplied the British military with a large number of watches with waterproof screw-back cases. \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e After the war, while searching for the optimal mechanism for the waterproof case, the idea of ​​using an automatic movement was reached to reduce the risk of water entering the watch when the crown was operated.\u003cspan lang=\"EN-US\"\u003e \u003cbr\u003eThus, in \u003cspan lang=\"EN-US\"\u003e1948\u003c\/span\u003e , the world's first waterproof automatic wristwatch, the Seamaster, was born, combining a screw-back waterproof case with an automatic movement. \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\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\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e The Seamaster features a subdued guilloche dial and the practical beauty that is typical of Omega from \u003cspan lang=\"EN-US\"\u003ethe 1950s\u003c\/span\u003e . \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e The dial of this model is covered with delicate guilloche decoration, and rather than giving off a strong luster like a sunray finish, the countless uneven surfaces gently absorb the light, ensuring excellent visibility even during the day.\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003c\/span\u003e Rather than reflecting light to make a statement, the matte texture creates shadows in subdued light, evoking the design philosophy of the time, which placed emphasis on practicality.\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n \u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003eThe indexes are made of upright gold bars with a cut finish.\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003c\/span\u003e The three-dimensionally shaped indexes overlap with the intricate details of the guilloche, creating a subtle yet profound look.\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003c\/span\u003e It also pairs well with the gold-tone dolphin hands, achieving a high level of both visibility and elegance.\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e The cursive \u003cspan lang=\"EN-US\"\u003eSeamaster\u003c\/span\u003e logo and the minimalist layout of the inscriptions are also elements that enhance the quiet appearance of the dial. \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e The case is a round stainless steel case without excessive decoration.\u003cspan lang=\"EN-US\"\u003e \u003cbr\u003eThe lines flowing from the middle case to the lugs are very straightforward, demonstrating the balance between practicality and beauty that Omega excelled at in \u003cspan lang=\"EN-US\"\u003ethe 1950s\u003c\/span\u003e .\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e The lugs are of a moderate thickness but taper naturally towards the tip, creating a neat appearance that does not stand out too much on the wrist.\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003c\/span\u003e The flat bezel, with just the right width, complements the soft look of the dial, bringing the whole piece together nicely. \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e \u003cspan lang=\"EN-US\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0762\/8980\/2535\/files\/2025-12-27T205959.534.png?v=1766916395\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e The movement is equipped with \u003cspan lang=\"EN-US\"\u003eCal. 491\u003c\/span\u003e , a \u003cspan lang=\"EN-US\"\u003e19-\u003c\/span\u003e jewel automatic movement.\u003cbr\u003e\u003cbr\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e Designed during the mature stage of automatic winding mechanisms, this caliber is highly refined as a practical machine, combining winding efficiency and stability.\u003cspan lang=\"EN-US\"\u003e \u003cbr\u003eThe neat finish, which does not rely on excessive decoration, gives the impression of honest manufacturing, typical of Omega at the time, which was designed with the assumption that it would be used for a long time. \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\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\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e Case size: height: \u003cspan lang=\"EN-US\"\u003e41.3mm\u003c\/span\u003e , width: \u003cspan lang=\"EN-US\"\u003e36.8mm\u003c\/span\u003e , thickness: \u003cspan lang=\"EN-US\"\u003e11.8mm\u003c\/span\u003e , weight: \u003cspan lang=\"EN-US\"\u003e66g\u003c\/span\u003e . \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e With its calming cream-toned dial and neat round case, this watch blends naturally with any outfit.\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003c\/span\u003e It adds just the right amount of elegance to jackets and shirt styles, and a touch of calmness to casual outfits such as knits and cotton shirts.\u003cspan lang=\"EN-US\"\u003e\u003cbr\u003e\u003c\/span\u003e The Seamaster from \u003cspan lang=\"EN-US\"\u003ethe 1950s\u003c\/span\u003e captivates not with its flashiness but with its texture and appearance.\u003cspan lang=\"EN-US\"\u003e \u003cbr\u003eIt is a quiet presence that accompanies you in your daily life, whether you are on or off duty. \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e The case is in good condition with no noticeable scratches.\u003cbr\u003e The dial remains in excellent condition with no stains or wear.\u003cbr\u003e The movement is running smoothly and there are no issues with the specifications. \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e It is fitted with a genuine Omega rice bracelet. \u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\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\n\u003ctable border=\"1\" width=\"100%\" style=\"width: 100%; height: 548.625px;\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" colspan=\"2\" style=\"width: 99.5798%; height: 19.5938px;\"\u003e \u003cb\u003e\u003cspan color=\"#0F000D\" style=\"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 bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 39.1875px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eYear of manufacture\u003c\/span\u003e \u003c\/th\u003e\n\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 39.1875px;\"\u003e\n\n\u003cp style=\"text-align: left;\"\u003e Made in 1954 \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 bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 58.7812px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eMovement\u003c\/span\u003e\n\u003c\/th\u003e\n\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 58.7812px;\"\u003e\n\n \u003cspan lang=\"EN-US\"\u003eCal.491 \/ 19 jewels \/ 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 bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 58.7812px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eCase Size\u003c\/span\u003e\n\u003c\/th\u003e\n\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 58.7812px;\"\u003e \n\u003cspan\u003e\u003cspan lang=\"EN-US\"\u003eLength\u003c\/span\u003e \u003cspan lang=\"EN-US\"\u003e41.3\u003c\/span\u003e\u003c\/span\u003e \u003cspan\u003emm (including lugs) \/ Width \u003cspan lang=\"EN-US\"\u003e36.8\u003c\/span\u003e\u003c\/span\u003e \u003cspan\u003emm (including crown) \/ Thickness \u003cspan lang=\"EN-US\"\u003e11.8\u003c\/span\u003e mm\u003c\/span\u003e \u003cspan\u003e\/ Lug width 18 mm \/ Weight 66 g\u003c\/span\u003e \n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 58.7812px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eCase material\u003c\/span\u003e\n\u003c\/th\u003e\n\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 58.7812px; text-align: left;\"\u003e SS (stainless steel) \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 39.1875px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eaccessories\u003c\/span\u003e\n\u003c\/th\u003e\n\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 39.1875px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eWatch body \/ Original case \/ Our store warranty (1 year free warranty) \/ Searchina case\u003c\/span\u003e \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 19.5938px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003esituation\u003c\/span\u003e\n\u003c\/th\u003e\n\n\u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 19.5938px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eAntique (Used)\u003c\/span\u003e \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003cth bgcolor=\"#FFFEFC\" align=\"center\" style=\"width: 6.30252%; height: 39.1875px;\"\u003e \u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003eWaterproof function\u003c\/span\u003e\n\u003c\/th\u003e\n\n \u003ctd bgcolor=\"#FFFEFC\" style=\"width: 93.2773%; height: 39.1875px;\"\u003e\n\u003cspan color=\"#0F000D\" size=\"2\" style=\"color: #0f000d; font-size: small;\"\u003enon-waterproof\u003c\/span\u003e \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 215.531px;\"\u003e\n\n\u003ctd align=\"center\" style=\"width: 6.30252%; height: 215.531px;\"\u003e Note\u003c\/td\u003e\n\n\u003ctd style=\"width: 93.2773%; height: 215.531px;\"\u003e *This product will be overhauled after your order is placed, so shipping will take \u003cspan\u003eapproximately 1 to 2 months\u003c\/span\u003e .\u003cbr\u003e Please be aware of this.\u003cbr\u003e\u003cbr\u003e *Please note that the color may appear slightly different on your screen than in real life.\u003cbr\u003e\u003cbr\u003e *This product is also sold in stores. We regularly update our inventory, but the product you purchased may be out of stock. Please note that if there is no scheduled restock, your order may be canceled.\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e \u003cspan\u003eAll watches sold in our store are inspected internally by a professional watch mechanic upon arrival and are only sold after being determined to be genuine, so you can use them with confidence.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e \u003cbr\u003e\u003cspan\u003eWhen you purchase a watch, we will ship it to you with a brand new leather strap.\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003ePlease select the color you want from the order selection tab and place your order.\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003e*For products that come with the original watch strap or metal band, the leather strap will not be attached and will be sent separately as a spare.\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003eWe will also include a special case for the watch when shipping.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cbr\u003e \u003cspan color=\"#ff0000\" size=\"1\" style=\"color: #ff0000; font-size: xx-small;\"\u003ePlease be sure to read the following information after purchasing an antique watch.\u003cbr\u003e\u003cbr\u003e When selling antique watches at RESUME, we do not immediately hand over the watch to you upon receiving your order. Instead, we have a professional overhaul (hereinafter referred to as OH) the watch, and then we deliver it to you after the OH is completed. (This takes about 1-2 months.)\u003cbr\u003e\u003c\/span\u003e \u003cbr\u003eOur specialized craftsmen, who are first-class watch repair technicians, will completely disassemble your watch, replace worn parts such as internal gaskets, clean it, oil it, and perform a thorough overhaul, maintaining it to a daily accuracy of about ±1 minute.\u003cbr\u003e When we deliver the machine to you, we will also send you our own overhaul certificate, which will show you what kind of overhaul work was done on the machine, as well as photos of the machine being disassembled and serviced.\u003cbr\u003e\u003cbr\u003e Of course, since the product itself is a second-hand item, there is no guarantee that it will never break, but we ask for your understanding that we have taken this approach so that you can enjoy the watch's inherent performance and use it with peace of mind in the future.\u003cbr\u003e \u003cbr\u003eWhen you purchase a product, we offer a one-year warranty depending on the model. Even if the warranty has expired, we will still repair the product for a fee. If there is no repair shop nearby, please feel free to contact us.\u003c\/p\u003e\n\n\u003cp\u003e\u003c\/p\u003e","brand":"RESUME","offers":[{"title":"black","offer_id":50863622488359,"sku":null,"price":0.0,"currency_code":"JPY","in_stock":false},{"title":"Brown","offer_id":50863622521127,"sku":null,"price":0.0,"currency_code":"JPY","in_stock":false},{"title":"Navy","offer_id":50863622553895,"sku":null,"price":0.0,"currency_code":"JPY","in_stock":false},{"title":"wine","offer_id":50863622586663,"sku":null,"price":0.0,"currency_code":"JPY","in_stock":false},{"title":"Chestnut","offer_id":50863622619431,"sku":null,"price":0.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/8980\/2535\/files\/2025-12-27T210814.759.png?v=1766916483","url":"https:\/\/vintage-watch-resume.com\/en\/products\/omega-%e3%82%aa%e3%83%a1%e3%82%ac-54s-seamaster-cal-491","provider":"RESUME","version":"1.0","type":"link"}