$57,500
“Equation of Time, Perpetual Calendar” Breguet, “Equation of Time, Perpetual Calendar”, Automatic, No. 8525, Ref 3477. Made in the 1990s. Very fine and rare, self-winding, platinum gentleman's wristwatch with equation of time, perpetual calendar, power-reserve and a platinum Breguet deployant clasp. Three-body, solid, polished, reeded band, gold screwed bars, transparent case back, sapphire crystals. Two-tone "guilloché" silver with painted radial Roman numerals on an outer plain reserve, subsidiary sectors for the equation of time and the power reserve indication, subsidiary dials for the days of the month, the months and the leap year, aperture for the days of the week at 12, secret Breguet signature. Blued steel "Breguet" hands. Cal. 502 QPET, rhodium-plated, hand-engraved, 38 jewels, straight line lever escapement, monometallic balance, shock-absorber, self-compensating flat balancespring, skeletonized off-center gold rotor. Dial, case and movement signed. Diam. 36 mm. Thickness 8 mm. Notes What is a Perpetual Calendar? A perpetual calendar is a calendar mechanism which, unlike a simple calendar, automatically adjusts to the correct day of the month by accounting for the varying durations of each month, as well as self-correcting for the 29th of February during leap years. Audemars Piguet are said to have been the first to produce wristwatches with perpetual calendar and moon phases, in 1924. In 1925, Patek Philippe modified a lady’s pendant watch with perpetua
Auctioneer:
Antiquorum
Date:
2005-09-28
