拍品 50
50
CHRONOMETERS
An early nineteenth century one-day marine chronometer the silvered dial signed and numbered R. Bridgeman London 147 One Day, Roman hour numeral, subsidiary seconds dial inscribed Chronor., the top-plate inscribed R. Bridgeman 147 LONDON, Earnshaw escapement, 15,600 count train, cut bi-metallic balance, segmental heat compensation weights, blued steel helical balance spring, dovetail spring detent with jewelled locking stone to side of banking block, deep skirted brass bowl in square section gimball ring, in two tier plain mahogany box the top section with sliding cover to glazed viewing port, with inset ivory plaque inscribed Captain Charles White, Royal Navy, external brass drop handles -- 3in. (7.6cm.) dial dia; Case 6¾in. (17cm.) square

细节
An early nineteenth century one-day marine chronometer the silvered dial signed and numbered R. Bridgeman London 147 One Day, Roman hour numeral, subsidiary seconds dial inscribed Chronor., the top-plate inscribed R. Bridgeman 147 LONDON, Earnshaw escapement, 15,600 count train, cut bi-metallic balance, segmental heat compensation weights, blued steel helical balance spring, dovetail spring detent with jewelled locking stone to side of banking block, deep skirted brass bowl in square section gimball ring, in two tier plain mahogany box the top section with sliding cover to glazed viewing port, with inset ivory plaque inscribed Captain Charles White, Royal Navy, external brass drop handles -- 3in. (7.6cm.) dial dia; Case 6¾in. (17cm.) square
See illustration

拍品专文

This chronometer is an enigma. The dial and top-plate are signed and numbered R. Bridgeman 147 London and the style of engraving is compatible with the first quarter of the nineteenth century; a scrated name behind the dial reads M. Bridgeman. Beneath the balance cock is scratched the number 423, the back of the dial is similarly scratch marked. The counter weight skirt of the bowl would appear from its general state and colour to be of a later date as are the bowl fittings at III & IX. The screw-in bolt action locking arm is modern