The Art of American Horology Part ll,...

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

LOT 647

Waltham Mass., U.S.A., No. 25511339, Model 1908, "Vanguard" Grade , circa 1926.Very fine and rare, 14K white gold-filled, two-time zone, keyless, 23-jewel Railroad watch with a 24-hour winding indicator and Lossier's Inner Terminal Hairspring.

C. Three-piece, using J. Boss patent, screwed bezel and back with a train approaching a station. D. Double-sunk white enamel with bold and oversized Arabic numerals, outer minute ring, up-and-down indicator at 12 o'clock, subsidiary seconds. Blued steel "Spade" hands, gold one for the second time zone. M. 16 size, nickel, 3/4 split plate with mocked bridge, damascened, 23 jewels, gold center wheel, straight line lever escapement with sapphire pallets, cut bimetallic compensation balance with golscrews adjusted to 6 positions, blued steel Breguet balance spring with outer and inner Lossier terminal curves, Ohlsen's patented micrometric regulator.Signed on dial, case and movementDiam. 51 mm.