Vacheron Constantin Patrimony 30050

Vacheron Constantin. A very fine and rare platinum twin barrel wristwatch with one minute tourbillon and power reserve Signed Vacheron Constantin, Geneve, Tourbillon No. 17, Les Complications model, ref. 30050, movement no. 816'547, case no. 633'268, manufactured in 1993 Cal. 1760 three quarter plate nickel-finished twin barrel movement, 28 jewels, the engine-turned silvered dial with applied white gold Roman and triangular numerals, white gold dauphine hands, the three armed polished steel tourbillon carriage visible through a glazed aperture to 6 o'clock, combined with constant seconds, fan-shaped sector for power reserve at 12, in circular case with glazed display snap on back, platinum Vacheron Constantin buckle, dial and movement signed 38 mm. diam.