108,000 CHF
The World's Largest Prize-Winning Deck Tourbillon Technicum de la Chaux-de-Fonds, No. 792.1, movement by Prof. Robert Gafner, carriage by Prof. Georges Sautebin, adjusted by Frédy Guyot, circa 1940. Extremely fine and rare, exceptionally large silver keyless one minute and 42 seconds tourbillon regulator desk chronometer, with 56-hour power reserve indicator and Guillaume balance. One of only four, winner of the second prize at the timing contests of 1945, 1947 and 1948. Three-piece, "tambour", glazed on both sides, screw bezels with reeded edges. Notes In a typical tourbillon the carriage is mounted on the 4th wheel pinion, which holds the seconds hand. Concentrically to it, a raised stationary wheel is fixed to the pillar plate. The escape wheel is mounted in the carriage in such a way that it gears with this stationary wheel and "runs" around it bringing with it the entire carriage since, usually the 4th wheel rotates once per minute. Such tourbillons are called one-minute tourbillons. Although there exist some variation to this design, they are, as a rule, rare. The one in the present watch is exceptionally interesting. The watch has an extra large wheel driven from the fourth wheel the one with the seconds hand fixed to it. This is the base for the carriage with thick 1.1 mm. hollow pivots, of which the bottom one runs in a large jewel in the plate and the top one in a similar jewel in a top bridge. Concentrically to the carriage in the pillar plate is fixed a
Auctioneer:
Antiquorum
Date:
2003-06-14
