The Art of American Horology Part ll,...

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

LOT 644

Waltham Mass., U.S.A., No. 22041107, Model 1908, "Crescent St." Grade , circa 1917.Very fine and exceptionally rare, rose gold-filled, keyless, Rail-road Grade watch with a highly unusual 24-hour dial.

C. Three-piece by "Keystone" using J. Boss patent, polished, screwed bezel and back with reeded borders. D. White enamel recessed center, with alternating red and black Arabic numerals going from 1 to 8 and repeated three times, outer minute track, subsidiary sunk seconds. Blued steel "Double Swell Spade" hands. M. 16 size, nickel, bridge caliber, damascened, 21 jewels, the top ones in screwed gold settings, gold center wheel, straight line lever escapement with sapphire pallets, cut-bimetallicompensation balance with gold screws adjusted to 5 positions, blued steel Breguet balance spring with outer and inner terminal curves, Ohlson's patented micro-metric regulator, lever-set.Signed on dial and movement.Diam. 50 mm.