The Art of American Horology & Colle...

New York, Nov 28, 2001

LOT 158

Ball Watch Co., Cleveland, Ohio, Brotherhood of Railroad Trainmen, "Official Standard", No. 642049 by Hamilton, Model 999, finished on April 29, 1909, sold to Ball on April 30, 1909.Very fine, gold-filled, keyless Railroad Grade watch.

C. two-body, "bassine et filets", polished , screwed bezel, engine-turned back. D. white enamel, bold Arabic markers, outer minute ring, sunk subsidiary seconds. Blued steel "Railway Spade" hands. M. 18 size, nickel, full plate with motor barrel, damascened, 19 jewels, the top ones in gold settings, adjusted to 5 positions, straight line lever escapement with sapphire pallets and double roller, cut-bimetallic compensation balance with gold screws, blued steel Breguet balance spring, swan neck mirometric regulator, safety pinion.Signed on the dial, case and movement. Dial also signed "Trademark Standard" in tri-color lettering, movement engraved "Trademark", "B of R T", "Patented June 30'96", "Pat. Aug.18.96", "Pat. Dec. 8.08",.Diam. 55.1 mm.