Vacheron Constantin Patrimony 30050

VACHERON CONSTANTIN. A FINE LIMITED EDITION 18K GOLD TOURBILLON WRISTWATCH WITH POWER RESERVE SIGNED VACHERON CONSTANTIN, GENEVE, NO. 235, MOVEMENT NO. 828927, CASE NO. 660720, REF. 30050, CIRCA 1993 Cal. 1760 nickel-finished lever movement, 28 jewels, one-minute tourbillon carriage with mono-metallic compensation balance visible beneath the dial at 6 o'clock, adjusted to heat, cold and isochronism, silvered engine-turned dial with applied Roman and triangular numerals, fan-form sector for power reserve at 12 o'clock, circular case with stepped bezel, sapphire crystal display back, case, dial and movement signed , with an 18k gold Vacheron Constantin buckle 38mm diam.