Vacheron Constantin Patrimony 30050

"Les Complications - Tourbillon" Vacheron Constantin, Genève, "Les Complications - Tourbillon No. 96/300", movement No. 816626, case No.633241, Ref. 30050. Made in the 1990s in a limited edition of 300 examples, only 3 of these watches were made with transparent case back. Sold on Feb. 15, 1994. Extremely fine, rare and important, 18K yellow gold gentleman's wristwatch with visible one-minute tourbillon regulator, two barels, power-reserve indication and an 18K yellow gold Vacheron & Constantin buckle. Accompanied by a fitted box, technical documents and certificate., USD 60,000 - 80,000 EUR 50,000 - 67,000Sold: USD 67,260 C. Two-body, solid, polished, stepped bezel, straight lugs, transparent case back to view the movement, sapphire crystals. D. "Guilloché" silver with applied yellow gold Roman numerals and triangular indexes, graduation for the up-and-down indication at 12, aperture for the tourbillon regulator under a polished steel bridge at 6, carrying a subsidiary seconds hand. Yellow gold "dauphine" hands. M. Cal. 1760, rhodium-plated, "fausses côtes" decoration, 28 jewels, lateral lever escapement, one-minute tourbillon regulator with polished steel arms, monometallic balance, shock-absorber, self-compensating Breguet balance-spring, twin barrels. Dial and movement signed, case numbered. Diam. 38 mm. Thickness 12 mm.