{"product_id":"omega-seamaster-chrono-1960s-cal-321-ref-105-004","title":"Omega Seamaster Chrono 1960s Cal 321 ref 105.004","description":"\u003cp data-start=\"0\" data-end=\"63\"\u003e\u003cstrong data-start=\"0\" data-end=\"63\"\u003eOmega Seamaster Chronograph Cal. 321 – Ref. 105.004 (1960s)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"65\" data-end=\"475\"\u003eThe vintage \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eOmega\u003c\/span\u003e\u003c\/span\u003e Seamaster Chronograph Ref. 105.004 is a highly collectible example of mid-century Swiss chronograph design, powered by the legendary Caliber 321 movement. Produced in the 1960s, this reference represents a period when Omega was manufacturing some of its most respected mechanical chronographs—sharing the same base movement lineage as early Speedmaster models.\u003c\/p\u003e\n\u003cp data-start=\"477\" data-end=\"897\"\u003eThe watch features a classic round case with balanced proportions, typically measuring around 35–36mm, offering a timeless and highly wearable size. The dial showcases a traditional dual-register chronograph layout with clean symmetry, often complemented by tachymeter or telemeter scales depending on configuration. Vintage patina, when present, enhances the character and desirability of these pieces among collectors.\u003c\/p\u003e\n\u003cp data-start=\"899\" data-end=\"1184\"\u003eAt the heart of the watch is the Omega Caliber 321, a column-wheel chronograph movement widely regarded as one of the finest ever produced. Known for its smooth actuation and historical significance, the Cal. 321 adds substantial collector appeal and long-term value to this reference.\u003c\/p\u003e\n\u003cp data-start=\"1186\" data-end=\"1361\"\u003eWith its blend of technical pedigree, elegant design, and historical importance, the Seamaster Chronograph 105.004 stands as a cornerstone piece for vintage Omega enthusiasts.\u003c\/p\u003e\n\u003cp data-start=\"1363\" data-end=\"1467\"\u003eThis pre-owned vintage example has been fully inspected, authenticated, and is ready for its next owner.\u003c\/p\u003e\n\u003chr data-start=\"1469\" data-end=\"1472\"\u003e\n\u003cp data-start=\"1474\" data-end=\"1493\"\u003e\u003cstrong data-start=\"1474\" data-end=\"1493\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1494\" data-end=\"2049\"\u003e\n\u003cli data-section-id=\"ag7yfg\" data-start=\"1494\" data-end=\"1532\"\u003eModel: Omega Seamaster Chronograph\u003c\/li\u003e\n\u003cli data-section-id=\"1ge0arb\" data-start=\"1533\" data-end=\"1555\"\u003eReference: 105.004\u003c\/li\u003e\n\u003cli data-section-id=\"15qb60p\" data-start=\"1556\" data-end=\"1570\"\u003eEra: 1960s\u003c\/li\u003e\n\u003cli data-section-id=\"rgu1pq\" data-start=\"1571\" data-end=\"1605\"\u003eCase Material: Stainless Steel\u003c\/li\u003e\n\u003cli data-section-id=\"135w957\" data-start=\"1606\" data-end=\"1652\"\u003eCrystal: Acrylic Crystal (Typical for Era)\u003c\/li\u003e\n\u003cli data-section-id=\"1mugq3h\" data-start=\"1653\" data-end=\"1730\"\u003eDial: Vintage Chronograph Dial with Dual Subdials (Patina May Be Present)\u003c\/li\u003e\n\u003cli data-section-id=\"yt91o6\" data-start=\"1731\" data-end=\"1767\"\u003eCase Size: Approximately 35–36mm\u003c\/li\u003e\n\u003cli data-section-id=\"5v08mf\" data-start=\"1768\" data-end=\"1823\"\u003eMovement: Omega Caliber 321 Manual Wind Chronograph\u003c\/li\u003e\n\u003cli data-section-id=\"xyfc61\" data-start=\"1824\" data-end=\"1875\"\u003eFunctions: Hours, Minutes, Seconds, Chronograph\u003c\/li\u003e\n\u003cli data-section-id=\"mot3v5\" data-start=\"1876\" data-end=\"1900\"\u003eStrap: Leather Strap\u003c\/li\u003e\n\u003cli data-section-id=\"1d2tivv\" data-start=\"1901\" data-end=\"1942\"\u003eWater Resistance: Minimal \/ Not Rated\u003c\/li\u003e\n\u003cli data-section-id=\"tonne\" data-start=\"1943\" data-end=\"2018\"\u003eCondition: Vintage Pre-Owned (Good Condition for Age, Fully Functional)\u003c\/li\u003e\n\u003cli data-section-id=\"1axtb8p\" data-start=\"2019\" data-end=\"2049\"\u003eBox \u0026amp; Papers: Not Included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Alexander's Jewelers","offers":[{"title":"Default Title","offer_id":50723856187638,"sku":null,"price":4999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0249\/0889\/0208\/files\/UN-3239_fpq7omxzgkw_2026-05-21-16-08-25-Photoroom.jpg?v=1779394270","url":"https:\/\/alexanderscolumbus.com\/products\/omega-seamaster-chrono-1960s-cal-321-ref-105-004","provider":"Alexander's Jewelers","version":"1.0","type":"link"}