{"product_id":"mwc-1940s-1950s-dirty-dozen-pattern-general-service-watch-with-31-jewel-swiss-sellita-sw260-automatic-movement-and-domed-vintage-box-sapphire-crystal","title":"MWC 1940s\/1950s \"Dirty Dozen\" Pattern Military Watch with 31-Jewel Swiss Sellita SW260 Automatic Movement and Domed Vintage Box Sapphire Crystal","description":"\u003cp\u003e\u003cstrong\u003eSKU Code: \u003cspan\u003eW10\/445-25CH\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"526\" data-start=\"192\"\u003eThis classic \u003cstrong data-end=\"246\" data-start=\"205\"\u003e31-jewel automatic MWC military watch\u003c\/strong\u003e is inspired by original British military designs from the \u003cstrong data-end=\"324\" data-start=\"305\"\u003e1940s and 1950s\u003c\/strong\u003e. It is powered by a \u003cstrong data-end=\"387\" data-start=\"345\"\u003eSwiss Sellita SW260 automatic movement\u003c\/strong\u003e and features a \u003cstrong data-end=\"436\" data-start=\"403\"\u003esmall subsidiary seconds dial\u003c\/strong\u003e, staying true to the proportions and layout of the original service watches from the era.\u003c\/p\u003e\n\u003cp data-end=\"896\" data-start=\"528\"\u003eWhile the external appearance closely follows the historical models, the watch has been discreetly upgraded with modern materials and engineering. Water resistance has been increased to \u003cstrong data-end=\"732\" data-start=\"714\"\u003e100 m (330 ft)\u003c\/strong\u003e, and the watch is fitted with a \u003cstrong data-end=\"820\" data-start=\"765\"\u003eshatter- and scratch-resistant sapphire box crystal\u003c\/strong\u003e, significantly improving durability while preserving the vintage aesthetic.\u003c\/p\u003e\n\u003ch3 data-end=\"920\" data-start=\"898\"\u003eCrystal \u0026amp; Movement\u003c\/h3\u003e\n\u003cp data-end=\"1217\" data-start=\"922\"\u003eInspired by the domed acrylic crystals of the 1950s, the raised \u003cstrong data-end=\"1010\" data-start=\"986\"\u003esapphire box crystal\u003c\/strong\u003e delivers a classic profile while offering exceptional scratch resistance—second only to diamond. Unlike acrylic, sapphire remains clear and unmarked over time, enhancing long-term legibility and resilience.\u003c\/p\u003e\n\u003cp data-end=\"1484\" data-start=\"1219\"\u003eThe original hand-wound movement has been replaced with a \u003cstrong data-end=\"1305\" data-start=\"1277\"\u003emodern automatic calibre\u003c\/strong\u003e, offering the convenience of self-winding while still allowing \u003cstrong data-end=\"1387\" data-start=\"1369\"\u003emanual winding\u003c\/strong\u003e if preferred. This upgrade improves reliability and usability without compromising authenticity.\u003c\/p\u003e\n\u003ch3 data-end=\"1501\" data-start=\"1486\"\u003eCase \u0026amp; Dial\u003c\/h3\u003e\n\u003cp data-end=\"1795\" data-start=\"1503\"\u003eThe watch features a \u003cstrong data-end=\"1569\" data-start=\"1524\"\u003eheavy satin-finished stainless steel case\u003c\/strong\u003e, manufactured from \u003cstrong data-end=\"1628\" data-start=\"1589\"\u003emilitary-grade 316L stainless steel\u003c\/strong\u003e. Additional details include a \u003cstrong data-end=\"1679\" data-start=\"1659\"\u003escrew-down crown\u003c\/strong\u003e, \u003cstrong data-end=\"1700\" data-start=\"1681\"\u003ehacking seconds\u003c\/strong\u003e, and a \u003cstrong data-end=\"1745\" data-start=\"1708\"\u003eblack dial with luminous markings\u003c\/strong\u003e for excellent visibility in low-light conditions.\u003c\/p\u003e\n\u003cp data-end=\"1925\" data-start=\"1797\"\u003eIt is supplied on a \u003cstrong data-end=\"1867\" data-start=\"1817\"\u003ehistorically accurate 1950s-style canvas strap\u003c\/strong\u003e, closely matching those used on original service watches.\u003c\/p\u003e\n\u003ch3 data-end=\"1949\" data-start=\"1927\"\u003eHistorical Context\u003c\/h3\u003e\n\u003cp data-end=\"2335\" data-start=\"1951\"\u003eThe final image shows the original twelve military watches produced by manufacturers such as Buren, Cyma, Eterna, Grana, Jaeger-LeCoultre, Lemania, Longines, IWC, Omega, Record, Timor, and Vertex.\u003cbr data-end=\"2150\" data-start=\"2147\"\u003eAlthough MWC was founded later in \u003cstrong data-end=\"2192\" data-start=\"2184\"\u003e1974\u003c\/strong\u003e and was not one of the original manufacturers, this model faithfully captures the spirit, proportions, and purpose of those iconic timepieces.\u003c\/p\u003e\n\u003chr data-end=\"2340\" data-start=\"2337\"\u003e\n\u003ch3 data-end=\"2360\" data-start=\"2342\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"2435\" data-start=\"2364\"\u003e\n\u003cstrong data-end=\"2382\" data-start=\"2364\"\u003eCase Diameter:\u003c\/strong\u003e 36.5 mm (excluding crown), 39 mm (including crown)\u003c\/li\u003e\n\u003cli data-end=\"2461\" data-start=\"2438\"\u003e\n\u003cstrong data-end=\"2453\" data-start=\"2438\"\u003eLug-to-Lug:\u003c\/strong\u003e 43 mm\u003c\/li\u003e\n\u003cli data-end=\"2488\" data-start=\"2464\"\u003e\n\u003cstrong data-end=\"2478\" data-start=\"2464\"\u003eThickness:\u003c\/strong\u003e 12.5 mm\u003c\/li\u003e\n\u003cli data-end=\"2510\" data-start=\"2491\"\u003e\n\u003cstrong data-end=\"2500\" data-start=\"2491\"\u003eLugs:\u003c\/strong\u003e Drilled\u003c\/li\u003e\n\u003cli data-end=\"2537\" data-start=\"2513\"\u003e\n\u003cstrong data-end=\"2529\" data-start=\"2513\"\u003eDial Colour:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli data-end=\"2581\" data-start=\"2540\"\u003e\n\u003cstrong data-end=\"2558\" data-start=\"2540\"\u003eCase Material:\u003c\/strong\u003e 316L stainless steel\u003c\/li\u003e\n\u003cli data-end=\"2620\" data-start=\"2584\"\u003e\n\u003cstrong data-end=\"2597\" data-start=\"2584\"\u003eCaseback:\u003c\/strong\u003e 316L stainless steel\u003c\/li\u003e\n\u003cli data-end=\"2660\" data-start=\"2623\"\u003e\n\u003cstrong data-end=\"2633\" data-start=\"2623\"\u003eCrown:\u003c\/strong\u003e Screw-down locking crown\u003c\/li\u003e\n\u003cli data-end=\"2710\" data-start=\"2663\"\u003e\n\u003cstrong data-end=\"2684\" data-start=\"2663\"\u003eWater Resistance:\u003c\/strong\u003e 100 m \/ 330 ft \/ 10 ATM\u003c\/li\u003e\n\u003cli data-end=\"2759\" data-start=\"2713\"\u003e\n\u003cstrong data-end=\"2726\" data-start=\"2713\"\u003eMovement:\u003c\/strong\u003e Swiss Sellita SW260, 31 jewels\u003c\/li\u003e\n\u003cli data-end=\"2796\" data-start=\"2762\"\u003e\n\u003cstrong data-end=\"2776\" data-start=\"2762\"\u003eFrequency:\u003c\/strong\u003e 28,800 vph (4 Hz)\u003c\/li\u003e\n\u003cli data-end=\"2863\" data-start=\"2799\"\u003e\n\u003cstrong data-end=\"2811\" data-start=\"2799\"\u003eCrystal:\u003c\/strong\u003e Sapphire box crystal with anti-reflective coating\u003c\/li\u003e\n\u003cli data-end=\"2899\" data-start=\"2866\"\u003e\n\u003cstrong data-end=\"2888\" data-start=\"2866\"\u003eLuminous Material:\u003c\/strong\u003e Luminova\u003c\/li\u003e\n\u003cli data-end=\"2943\" data-start=\"2902\"\u003e\n\u003cstrong data-end=\"2920\" data-start=\"2902\"\u003eSerial Number:\u003c\/strong\u003e Engraved on caseback\u003c\/li\u003e\n\u003cli data-end=\"2985\" data-start=\"2946\"\u003e\n\u003cstrong data-end=\"2956\" data-start=\"2946\"\u003eStrap:\u003c\/strong\u003e 18 mm 1950s-pattern canvas\u003c\/li\u003e\n\u003cli data-end=\"3033\" data-start=\"2988\"\u003e\n\u003cstrong data-end=\"3002\" data-start=\"2988\"\u003ePackaging:\u003c\/strong\u003e Supplied in presentation box\u003c\/li\u003e\n\u003cli data-end=\"3062\" data-start=\"3036\"\u003e\n\u003cstrong data-end=\"3050\" data-start=\"3036\"\u003eGuarantee:\u003c\/strong\u003e 24 months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e* Photo Credit:\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/watchesofknightsbridge.com\/\" target=\"_blank\"\u003eWatches Of Knightsbridge\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eFor anyone interested in the history of the Dirty Dozen these links show the 12 original watches and explain the history.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.acollectedman.com\/blogs\/journal\/59621443-the-story-of-the-dirty-dozen-the-first-wristwatches-specially-commissioned-for-the-british-army\" target=\"_blank\"\u003eThe Dirty Dozen 1\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.hodinkee.com\/articles\/dirty-dozen-twelve-military-watches\" target=\"_blank\"\u003eThe Dirty Dozen 2\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/monochrome-watches.com\/your-guide-to-the-dirty-dozen-including-the-only-british-member-vertex\/\" target=\"_blank\"\u003eThe Dirty Dozen 3\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3 data-end=\"214\" data-start=\"182\"\u003eBenefits of Sapphire Crystal\u003c\/h3\u003e\n\u003cp data-end=\"649\" data-start=\"216\"\u003eMany customers ask about the advantages of sapphire crystal compared to traditional plexiglass. Synthetic sapphire is widely regarded as the superior material for watch crystals due to its exceptional strength and resistance to both scratching and shattering. This makes it particularly well suited to military and security personnel, police officers, and active outdoor enthusiasts—groups that account for over 70% of our customers.\u003c\/p\u003e\n\u003cp data-end=\"1059\" data-start=\"651\"\u003eTraditional plexiglass (plastic\/acrylic) crystals were far more susceptible to scratches and cracking and also limited the overall water resistance of the watch. By contrast, sapphire crystals are heat-treated to remove internal stresses, significantly improving durability and long-term performance. Each crystal is then finished with two layers of anti-reflective coating to enhance clarity and legibility.\u003c\/p\u003e\n\u003cp data-end=\"1248\" data-start=\"1061\"\u003eWhile sapphire crystal is more expensive to manufacture, it is typically found only on higher-specification watches and represents a substantial upgrade in both performance and longevity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"MWC - Military Watch Company","offers":[{"title":"Default Title","offer_id":50889178120522,"sku":"W10\/445-25CH","price":818.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1140\/1866\/files\/W10445-25CH-on-strap-_B_JUN0842.jpg?v=1751286120","url":"https:\/\/militarywatchcompany.com\/products\/mwc-1940s-1950s-dirty-dozen-pattern-general-service-watch-with-31-jewel-swiss-sellita-sw260-automatic-movement-and-domed-vintage-box-sapphire-crystal","provider":"MWC - Military Watch Company","version":"1.0","type":"link"}