English precision pocket watch with duplex escapement Circa 1818

Fine gold pair cased pocket watch by Barwise & Sons
–
A fine English pair cased precision pocket watch with duplex escapement, circa 1818.
Polished 18-carat gold case with case maker’s punch mark TH (Thomas Hardy). Signed off-white enamel dial with radial Roman numerals, outer minutes track, subsidiary dial for the seconds, and gold Breguet hands. Signed brass full plate movement, keywind, chain/fusee, steel balance.
–
Diameter: 55 mm
–
Weight: 146 g
–
Signed: Barwise & Sons, London
–
John Barwise (1757-1842)
John Barwise was one of London’s most renowned makers of precision watches and one of the few watchmakers who served as an expert on the Board of Longitude during the chronometer dispute between John Arnold and Thomas Earnshaw.