Vacheron Constantin Calatrava steel

Vacheron Constantin from the 1950s, featuring a 33 mm steel screw-back case. The two-tone silver dial displays a raised enamel signature, applied gold Arabic numerals at 12, 2, 4, 8, and 10, gold dot indexes, gold dauphine hands, and a subsidiary seconds register at 6 o'clock with railroad track. It is powered by the manual-winding caliber 453.