The Art of American Horology & Colle...

New York, Nov 28, 2001

LOT 163

Ball Watch Co., Cleveland, O., "Official RR Standard", No. B235985, by Hamilton, circa 1902.Very rare and fine, gold-filled, keyless Railroad Grade watch with 36-hour winding indicator.

C. three-body, "bassine" by Keystone, polished, screwed bezel and back, engine-turned back with engraved foliage pattern. D. white enamel, double sunk, bold Arabic numerals, outer minute ring, sunk up/down indicator below 12 o'clock, sunk subsidiary seconds. Blued steel "Spade" hands. M. 16 size, nickel, 3/4 split plate, damascened, 19 jewels, the top ones in gold settings, adjusted to 5 positions, gold center wheel, straight line lever escapement, cut-bimetallic compensation balance with gold srews, blued steel Breguet balance spring, swan neck micrometric regulator.Signed on the dial, case, and movement. Dial also signed "Trademark Official RR Standard". Movement engraved "Trademark", "Pat. Nov. 17.96", "Sapphire Pallets".Diam. 51.7 mm.