The Art of American Horology Part ll,...

Roosevelt Hotel, Madison Avenue @ 45th Street, Dec 04, 2002

LOT 635

Waltham, Mass., No. 19063756, Model 1908, "Vanguard" Grade, circa 1914.Very fine and rare, yellow gold-filled, keyless, non-magnetic, 23-jewels Railroad watch with a winding indicator.

C. Three-piece, by Keystone, No. 5699051, J. Boss patent, screw back and bezel, reeded bezels. D. White enamel, triple sunk, upright bold Arabic numerals, outer minute track, up-and-down indicator at 12 o'clock, subsidiary sunk seconds. Blued steel bold spade hands.M. 16 size, nickel, bridge caliber, with crosshatched damascening, 23 jewels in raised gold settings, adjusted to 5 positions (+temperature and isochronism), straight line lever escapement, cut-bimetallic compensation balance with non-magnetic Palladium Breguet balance spring, Ohlson's patented (US Patent No. 894457) micrometric regulator, gold center wheel. Signed on dial and movement. Diam. 51 mm.