The Chronomètre Royal 1907 watch houses a new mechanical movement bearing a rare double certification: the Hallmark of Geneva, and a chronometer-rating certificate from the Swiss Chronometer Testing Institute (COSC).
The mechanical self-winding Calibre 2460 SCC has been entirely designed, developed and manufactured by the Manufacture Vacheron Constantin. This state-of-the-art movement is equipped – just like the most prestigious models in the century-old history of the Chronomètre Royal – with a stop seconds device enabling the wearer to stop the watch completely and thus achieve adjustment to the nearest second. Beating to the cadence of 28,800 vibrations per hour and endowed with a power reserve of approximately 43 hours, Calibre 2460 SCC drives central hour, minute and seconds hands. Its construction incorporated ceramic ball-bearings used in the rotation of the oscillating weight, thereby avoiding any need to lubricate the bearings and guaranteeing its durability.
In keeping with its noble rank, Calibre 2460 SCC is also distinguished by the careful bevelling work on the bridges decorated with the Côtes de Genève motif, and by the circular graining on the mainplate: this meticulous finishing, worthy of the finest Haute Horlogerie models, can be duly admired through the sapphire crystal case-back.
To ensure enhanced visibility of these remarkable decorations, the 22-carat gold oscillating weight of the Calibre 2460 SCC is delicately openworked. Created specifically for this timepiece, this oscillating weight is engraved “Chronomètre Royal”, appearing above the “Vacheron Constantin Genève” inscription.
Hallmark of Geneva and COSC
The exemplary and rare double certification of the Chronomètre Royal 1907 is a powerful token of its perfection and precision. First stamped with the prestigious Hallmark of Geneva, Calibre 2460 SCC meets the twelve demanding criteria of this symbol of durability and horological perfection.
The movement then successfully underwent the fifteen days of stringent testing performed by the Swiss Official Chronometer Testing Institute (COSC), a pledge of precision and exemplary precision in all positions. This battery of tests designed to guarantee the fine workmanship and accuracy of Calibre 2460 SCC is further complemented by individual controls conducted within the Manufacture on each movement for a full 30-day period.
The Chronomètre Royal 1907 model is delivered with two personalised documents certifying the quality of the tests performed on each of the movements: a special rating certificate from the Swiss Official Chronometer Testing Institute, reserved exclusively for watches bearing the Hallmark of Geneva; as well as a certification by Vacheron Constantin – signed by its CEO Juan-Carlos Torres and by the production manager – presenting the rating observation table of the model and individually guaranteeing that each timepiece emerging from the Manufacture workshops is worthy of and compliant with the lofty demands linked to the prestigious Chronomètre Royal watch by Vacheron Constantin.
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