62,500 CHF
VACHERON & CONSTANTIN, POCKET CHRONOMETER WITH ONE-MINUTE TOURBILLON GENEVA OBSERVATORY GOLD Vacheron & Constantin, Genève, movemeny by Lecoultre, No. 464262. Made in 1945. Extremely rare and very important 18K gold, keyless pocket Chronometer with one minute tourbillon regulator. Accompanied by the extract of the Geneva observatory in which it participated in 1967. Double-body, "bassine", polished, with concealed hinges, glazed gold cuvette. Silver with Roman numerals and subsidiary seconds. Blued steel "Breguet" hands. 22''', by Lecoultre, rhodium-plated, going barrel with over-winding protection click, 20 jewels, tourbillon regulator with three-arm equidistant carriage, lateral calibrated lever escapement, anibal-brass Guillaume balance with gold timing screws, Breguet balance spring, micrometric reguator with pin gap closing option . Notes Signed on the dial, case and movement. DIAM. 65 mm. THICKNESS 19 mm. 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. The design of this watch is very well thought-out: the arbor of the pallet fork is set outside the fourth wheel, allowing for a longer fork and facilitating manufacture. The entire carriage is very elegant, with symmetrically placed components; the escape wheel is symmetrical with the fork, the stud with the regulator
Auctioneer:
Antiquorum
Date:
2016-05-15
