{"product_id":"vacheron-constantin-18k-requtangular-1940s","title":"VACHERON CONSTANTIN 18k REQUTANGULAR 1940s","description":"\u003cp data-start=\"102\" data-end=\"272\"\u003eIn 1931, the \u003cstrong data-start=\"115\" data-end=\"126\"\u003eReverso\u003c\/strong\u003e was introduced — a reversible wristwatch that would go on to become a cultural icon in watchmaking, a design that continues to endure even today.\u003c\/p\u003e\n\u003cp data-start=\"274\" data-end=\"649\"\u003eIn its early years, the movement was supplied by \u003cstrong data-start=\"323\" data-end=\"335\"\u003eTavannes\u003c\/strong\u003e, but in 1933 \u003cstrong data-start=\"349\" data-end=\"362\"\u003eLeCoultre\u003c\/strong\u003e developed its own solutions specifically adapted for the reversible case. This resulted in the creation of the \u003cstrong data-start=\"474\" data-end=\"489\"\u003eCaliber 410\u003c\/strong\u003e, measuring only \u003cstrong data-start=\"506\" data-end=\"526\"\u003e3.5 mm in height\u003c\/strong\u003e and featuring a small seconds display, followed by the \u003cstrong data-start=\"582\" data-end=\"597\"\u003eCaliber 411\u003c\/strong\u003e, which incorporated a center seconds configuration.\u003c\/p\u003e\n\u003cp data-start=\"651\" data-end=\"871\"\u003eThese developments allowed the movement architecture to properly accommodate the unique reversible case construction. From that point onward, \u003cstrong data-start=\"793\" data-end=\"808\"\u003eCaliber 410\u003c\/strong\u003e would become the foundation for numerous derivative movements.\u003c\/p\u003e\n\u003cp data-start=\"873\" data-end=\"969\"\u003eIn 1934, \u003cstrong data-start=\"882\" data-end=\"897\"\u003eCaliber 413\u003c\/strong\u003e was introduced, and in 1935 the \u003cstrong data-start=\"930\" data-end=\"959\"\u003edate-equipped Caliber 412\u003c\/strong\u003e followed.\u003c\/p\u003e\n\u003cp data-start=\"971\" data-end=\"1308\"\u003eA major turning point came in 1938, when the Geneva-based holding company \u003cstrong data-start=\"1045\" data-end=\"1054\"\u003eSAPIC\u003c\/strong\u003e acquired \u003cstrong data-start=\"1064\" data-end=\"1087\"\u003eVacheron Constantin\u003c\/strong\u003e. In effect, the specialized watchmaking company \u003cstrong data-start=\"1136\" data-end=\"1162\"\u003eSpécialités Horlogères\u003c\/strong\u003e, formed by \u003cstrong data-start=\"1174\" data-end=\"1191\"\u003eEdmond Jaeger\u003c\/strong\u003e and \u003cstrong data-start=\"1196\" data-end=\"1223\"\u003eJacques-David LeCoultre\u003c\/strong\u003e, absorbed SAPIC and became deeply involved in the management of Vacheron Constantin.\u003c\/p\u003e\n\u003cp data-start=\"1310\" data-end=\"1522\"\u003eAs a result, watches produced under the \u003cstrong data-start=\"1350\" data-end=\"1363\"\u003eLeCoultre\u003c\/strong\u003e name were manufactured within the Vacheron Constantin facilities, while watches sold under \u003cstrong data-start=\"1455\" data-end=\"1475\"\u003eJaeger-LeCoultre\u003c\/strong\u003e were produced at the \u003cstrong data-start=\"1497\" data-end=\"1513\"\u003eLes Sentiers\u003c\/strong\u003e factory.\u003c\/p\u003e\n\u003cp data-start=\"1524\" data-end=\"1734\"\u003eWithin this context, in \u003cstrong data-start=\"1548\" data-end=\"1556\"\u003e1939\u003c\/strong\u003e, the year following LeCoultre’s participation in management, a movement based on the architecture of the Caliber 410 but uniquely adapted for Vacheron Constantin was introduced:\u003c\/p\u003e\n\u003cp data-start=\"1736\" data-end=\"1752\"\u003e\u003cstrong data-start=\"1736\" data-end=\"1752\"\u003eCaliber 435.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1754\" data-end=\"1967\"\u003eDeveloped under the leadership of the master watchmaker \u003cstrong data-start=\"1810\" data-end=\"1824\"\u003ePaul Lepeu\u003c\/strong\u003e and his technical team, the Caliber 435 built upon the functionality of the 410 while enhancing durability and elevating aesthetic refinement.\u003c\/p\u003e\n\u003cp data-start=\"1969\" data-end=\"2207\"\u003eThe movement features a \u003cstrong data-start=\"1993\" data-end=\"2031\"\u003eseparate bridge for the escapement\u003c\/strong\u003e, while the crown wheel includes a newly designed washer that provides controlled play, ensuring smooth transmission of energy from the winding crown through the ratchet wheel.\u003c\/p\u003e\n\u003cp data-start=\"2209\" data-end=\"2486\"\u003eIn terms of finishing, the movement displays a distinctive form of \u003cstrong data-start=\"2276\" data-end=\"2306\"\u003eCôtes de Genève decoration\u003c\/strong\u003e. Instead of the standard two sweeping waves across the bridge, the pattern is divided into \u003cstrong data-start=\"2398\" data-end=\"2427\"\u003esix finely executed waves\u003c\/strong\u003e, creating an even more delicate and refined visual effect.\u003c\/p\u003e\n\u003cp data-start=\"2488\" data-end=\"2783\"\u003eSuch finishing has been said to rival — or even surpass — that of \u003cstrong data-start=\"2554\" data-end=\"2587\"\u003ePatek Philippe’s Caliber 9-90\u003c\/strong\u003e, a movement widely regarded as one of the most beautiful rectangular calibers ever produced. The beauty of the Caliber 435 is so striking that simply observing it can leave the viewer breathless.\u003c\/p\u003e\n\u003cp data-start=\"2785\" data-end=\"3058\"\u003eInterestingly, when viewed from the front, the watch appears rather understated. Yet once the angle changes, its true character emerges. The case rises boldly from the sides, with strong vertical lines and sharply defined edges that create a dramatic architectural profile.\u003c\/p\u003e\n\u003cp data-start=\"3060\" data-end=\"3189\"\u003eIt is a design that clearly reflects a deep obsession with aesthetic form — transcending the boundaries of ordinary watch design.\u003c\/p\u003e\n\u003cp data-start=\"3191\" data-end=\"3411\"\u003eOperating at \u003cstrong data-start=\"3204\" data-end=\"3234\"\u003e18,000 vibrations per hour\u003c\/strong\u003e, and equipped with a \u003cstrong data-start=\"3256\" data-end=\"3273\"\u003escrew balance\u003c\/strong\u003e and a \u003cstrong data-start=\"3280\" data-end=\"3311\"\u003eBreguet overcoil hairspring\u003c\/strong\u003e, the movement reveals an unwavering dedication to durability, precision, and decorative excellence.\u003c\/p\u003e\n\u003cp data-start=\"3413\" data-end=\"3496\"\u003eIn every detail, one can sense a watchmaking philosophy that refused to compromise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e- wrist size in our picture is 17cm circumference -\u003c\/strong\u003e\u003c\/p\u003e","brand":"Vintage VACHERON CONSTANTIN Watches","offers":[{"title":"Default Title","offer_id":53136155476275,"sku":null,"price":1210000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0976\/1076\/0499\/files\/6D194E29-5688-4E34-AE70-372D13BD2D26.jpg?v=1775443302","url":"https:\/\/principe-prive-epocadoro.com\/products\/vacheron-constantin-18k-requtangular-1940s","provider":"PRINCIPE PRIVE - Epoca d'Oro","version":"1.0","type":"link"}