1,840 CHF
August Von Loehr, Swiss made, No. 3395, circa 1880.Fine and unusual silveroid self-winding "perpetual" pocket watch. Four-body, "bassine et filets", polished, silveroid hinged cuvette with winding and setting apertures. White enamel, radial Roman numerals, outer minute track, subsidiary sunk seconds. Blued steel "spade" hands. Notes On April 12, 1878 August von Loehr of Vienna filed for a British patent for a self-winding watch with a special simple overwinding prevention system and a special setting mechanism. On July 13, 1878, he filed for an American patent, which was granted on January 7, 1879 (No. 211280).Before Loehr's invention, self-winding watches required an elaborate disengaging system when fully wound. Loehr overcame this problem in a very simple way by employing an elastic ratchet pawn.
Auctioneer:
Antiquorum
Date:
2002-11-16
