Overseas 42040 — Yellow gold (J)

Vacheron Constantin 1310

COSC-certified automaticAutomaticA mechanical movement wound by a rotor as the watch moves on the wrist. on a Girard-Perregaux 3100 ébaucheÉbaucheAn incomplete movement supplied for further work before it becomes a finished watch mechanism. The parts included in an ébauche have varied by period and supplier; the term does not by itself specify a complete, assembled movement., about 3 mm thick, with gold rotorRotorAn oscillating weight that uses wrist movement to wind an automatic watch’s mainspring., quick-set dateA setting function that adjusts the date directly through a crown position, without repeatedly advancing the hands through full days. and ; used in the first Overseas.