细节
A two day mahogany marine chronometer, Thomas Mercer, No.20142, 1953,
silvered dial signed and numbered Thomas Mercer, 20142, EIIR, 1953, Roman numerals, subsidiary seconds and up-and-down dials, blued steel hands, fusee movement with spotted plates, Earnshaw escapement, spring foot detent, cut bimetallic balance with cylindrical heat compensation weights, white metal helical balance spring, gimballed in numbered brass bowl, two tier mahogany box, the upper section with applied plaque inscribed Supplied by James Morton Ltd, Sunderland, No.20142, dial diam. 10cm, 18cm. box.
silvered dial signed and numbered Thomas Mercer, 20142, EIIR, 1953, Roman numerals, subsidiary seconds and up-and-down dials, blued steel hands, fusee movement with spotted plates, Earnshaw escapement, spring foot detent, cut bimetallic balance with cylindrical heat compensation weights, white metal helical balance spring, gimballed in numbered brass bowl, two tier mahogany box, the upper section with applied plaque inscribed Supplied by James Morton Ltd, Sunderland, No.20142, dial diam. 10cm, 18cm. box.