Important Watches, Collector's Wristwatches and Clocks including
LOT 650
J. Sewill, 30 Cornhill, Royal Exchange, London, No. 40052, hallmarked 1909-10.Very fine 18K gold keyless astronomical perpetual calendar watch with chronograph.
C. Four-body, "bassine", polished, gold hinged cuvette. D. White enamel, Roman numerals, outer minute/seconds divisions, four subsidiary sunk dials for days of the week, date, months of the four-year leap cycle, and subsidiary seconds with phases of the moon aperture. Blued steel, "spade" hands. M. 41,4 mm, 3/4 plate, frosted and gilded, 25 jewels, lateral lever escapement with lift on the pallets, cut bimetallic compensation balance, free-sprung Breguet balance-spring, diamond endstone.Signed on the movement.Diam. 53 mm.
Estimate: 10,000 CHF - 12,000 CHF
Estimate: 6,600 - 8,000
Estimate: 6,000 USD - 7,300 USD
Grading system

C 3 D 3 - 11 - 01 M 3* AA
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Important Watches, Collector's Wristwatches and Clocks including
13-10-2001