Mens Vacheron Constantin Patrimony Skeleton Perpetual Calendar watch, platinum case (36mm diameter), black alligator leather strap, see-through sapphire crystal front and back featuring a skeleton 36 jewel #1120QP self-winding mechanical perpetual calendar movement with date, day-of-the-week, month, and moonphase indicators, 40 hour power reserve, water-resistant to 30 meters.
Here, pure, limpid scratch-resistant sapphire crystal replaces the opaque metal case back and sometimes the dial, too, providing a fascinating view of the elaborately open and decorated movements. These movements testify to the workmanship of the highest order with their unerring accuracy.
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