English silver pocket watch with mock pendulum Circa 1690

Rare pocket watch with full plate verge escapement
–
A rare pocket watch with mock pendulum, made by John Bushman in London, England, circa 1690. The open faced double case of this watch was crafted from silver and the numbered inner case has the master’s mark “IW”. The face of the watch has a decentralized champlevé dial at 12 o’clock on the front, a balance wheel under the dial, a cut out for the mock pendulum and gold plated hands. The movement has an extremely rare English verge escapement with full plate, magnificent engraving, early tulip pillars and a steep fusee.
Dial and movement are signed
–
Diameter: 57 mm
–
Weight: 113 g
–
Signed: John Bushman London
–
John Bushman
John Bushman was an important watchmaker from 1687-1710 in London; Son of a master watchmaker in Augsburg and master himself. The trade apparently included as many mathematical instruments and sundials as clocks.