57,500 HKD
Thomas Earnshaw Invenit et Fecit, No. 764-3368, with London hallmarks for 1836. Fine and rare silver poket chronometer. Later specially made three body, "forme quatre baguettes", engine-turned with fixed cuvette, madked "J.B." (Josiah Barnett). White enamel with Roman numerals and subsidiary seconds. Gold "pear" hands. Gilt brass full plate with cylindrical pillars, fusee with chain and maintaining power, Earnshaw spring detent escapement, polished steel three-arm balance, flat balance spring with Earnshaw sugar-tongue bimetallic compensation, gilt brass balance spring engraved with scrolling foliage and ruby endstone. Sgned on the dial and back plate. In very good condition. Diam. 56 mm. Notes Several pocket chronometer movements with sugar-tongue compensation, were left in gray by Thomas Earnshaw and subsequently finished, cased and sold by bis son in the 1820' s - 1830's. An almost identical pocket chronometer, No. 1035/3932 in a silver hunting cased macle in 1837, from the collection of the Time Museum (Rockford, Illinois) is described by Anthony Randall in the catalogue of the Museum, page 157.
Auctioneer:
Antiquorum
Date:
1996-06-03
