Vacheron Constantin Fiftysix self-winding

The Fiftysix self-winding, reference 4600E/000A-B442, is a 40mm round steel case watch with a silvered sector dial and dark gray strap. Its design references the 1956 reference 6073. The caseback is openworked, revealing an oscillating weight in 22K gold shaped after the Maltese cross and the finish of the automatic movement. The watch is fitted with a sapphire crystal, houses the automatic calibre 1326 with a 48-hour power reserve, includes a date function, and offers water resistance to 30 meters.