20,700 CHF
Albert Potter & Co. , Geneva, No. 486, circa 1880. Fine and most interesting, 18K gold, moon phase astronomical watch with unusual perpetual calendar. . D. White enamel with Roman numerals, outer Arabic minute ring, moon phase aperture and sunk subsidiar White enamel with Roman numerals, outer Arabic minute ring, moon phase aperture and sunk subsidiary seconds with inner perpetual calendar showing only the date, with the small hand automatically jumping from the last day of the month to the first of the next, whether it is a month of 28, 29, 30 or 31 days. Blued steel "spade" hands. Notes The perpetual calendar work of this watch is very similar to that designed for clocks, described by Moinet in his Nouveau Traite General d'Horlogerie, vol. 2, p1. XLIV, fig. 8 and 9.
Auctioneer:
Antiquorum
Date:
1996-10-12
