VACHERON & CONSTANTIN DECK CHRONOMETER GUILLAUME BALANCE MADE FOR THE BRITISH
HYDROGRAPHIC SERVICE STEEL
Vacheron & Constantin, Genève, "Chronomètre", No. 454838, case
No. 286263. Made for the British Hydrographic Service circa 1944.
Fine, large, silver, keyless center-seconds deck and pocket lever
Chronometer with Guillaume balance. Accompanied by the original
wooden fitted case made by Dennison.
Four-body, "bassine", polished, silver, hinged cuvette.
Silver, brushed, champlevé Arabic numerals, outer minute
divisions. Blued steel"spade" hands.
Cal. 166, gilt brass, "fausses côtes" decoration, 21 jewels,
straight line calibrated lever escapement, anibal-brass Guillaume
balance with gold timing screws, blued steel Breguet balance
spring, swan-neck micrometric regulator.