303,250 CHF
“Tourbillon” Vacheron & Constantin, Genève, No. 464269, case No. 614921, This watch was awarded First Prize in the 1949 Neuchatel Observatory timing contest. Cased and sold in 1990. Exceptional keyless, 18K pink gold pocket chronometer with one-minute tourbillon regulator and Guil-laume balance, which obtained 922 points at the 1948 Neuchatel Observatory Timing Contest, adjusted by master adjuster Urbain Brahier. Accompanied by original leather fitted box, a Certificate of Authenticity, and a copy of the Observatory Certificate. Three-piece, stepped bezels, double reeded band. Solid 18K pink gold, applied gold radial Roman numerals,engine-turned center and outermost. Gold "dauphine" hands. 50 mm (22’’’), pink gold gilt brass decoratedwith vermicelli pattern, going barrel with over-winding protection click, 20 jewels, tourbillon regulator with three-armequidistant carriage, lateral calibrated lever escapement, anibal-brass Guillaume balance with with goldtiming screws, Breguet balance spring, micrometric reguator with pin gap closing option.Dial, case and movement signed.Diam. 60 mm. Notes The Observatory Certificate records the following results: compensation error by degree: -0.47; change of rate with change of position: 0,20. On March 27, 1930, the Horological School of Le Sentier registered specifications for a tourbillon regulator which was tremendously successful. Vacheron Constantin used this ebauche for their best tourbillons destined for Observatory trials. Th
Auctioneer:
Antiquorum
Date:
2005-04-03
