$9,200
American Watch Co. , Waltham, Mass., Model 57, "Broadway" Grade, No. 1101037, delivered in July 1878.Extremely rare and fine, gold, hunting-cased watch with unusual calendar. four-body, "bassine", engine-turned covers engraved in foliate pattern, gold hinged cuvette with engine-turned border and aperture for winding. white enamel, Roman numerals, outer minute divisions, adjustable rotating disc in the center with days of the week, pointing to 5 columns with dates of month. Blued steel "Double Swell Spade" hands. 18 size, gilt, full plate, 7 jewels, lateral lever escapement, monometallic steel balance with blued steel undersprung flat balance spring, arbor prtruding through the cock for manual adjustment of the day disc.Signed on the dial and movement, dial also signed "Pat applied for".Diam. 53.9 mm. Notes After searching all American horological patents with calendar mechanisms - including all the patents granted or assigned to Waltham-, i.e. classes 368/28 (with calendar indicator), 368/37 (calendar combined with movable ring or disk) and 368/38 (calendar combined with movable ring or disk with jumper spring) we were unable to locate a single patent which remotely resembles the mechanism of the present watch. We uncovered only one patent relating to calendar display, by B. Rosenburg, of WalthamMass. No. 412796, however, it is completely different from the one employed in this watch. Most likely, a patent was not granted because the idea is based on a principle Read more…
Auctioneer:
Antiquorum
Date:
2001-11-28
