A white gold automatic dual time wristwatch with regulator style dial and date, Vacheron Constantin, 'Malte Dual Time', circa 2002

18k, nickel lever movement, 31 jewels, monometallic compensation balance, free-sprung regulator, adjusted to 5 positions, 18k rotor, silvered dial with Arabic numerals for minutes, three subsidiary dials for hours with Roman numerals, second time zone indication in 24-hours and date combined with subsidiary seconds, circular case with wide flaring stepped lugs, chamfered bezel, pusher above 10 for independently adjusting the second time zone hour hand, hinged case back revealing glazed screwed down sapphire crystal display cuvette, case, dial and movement signed,  with 18k white gold Vacheron Constantin buckle.