Important Collectors’ Wristwatches, P...

New York, Dec 05, 2007

LOT 141

Two-Day Marine Chronometer with Subsidiary Compensation Charles Frodsham, 7 Pavement, Finsbury Square, London, No. 1754, circa 1850. Fine rosewood 56 hour going marine chronometer with power reserve indicator.

C. Three-tier, brass-bound corners, external drop handles, glazed top missing, upper section with ivory signature plaque, gimbaled brass bowl with locking slide. D. Silvered with champlevé radial Roman numerals, outer minute track with Arabic five minute numerals, subsidiary seconds and power reserve indication, blued steel fleur de lys hands. M. Brass half plate, cut away for the barrel secured under a crescent-shaped bridge, ring-turned pillars with blued steel screws, fusée and chain with Harrison's maintaining power, spring-detent escapement, cut bimetallic compensation balance with peripheral temperature adjustment screws and mean time adjustment nuts, two-armed subsidiary compensation mounted on the balance pivot above the balance and with 2 perpendicular adjustment nuts on long screw threads, blued steel free-sprung helical balance spring with inner and outer terminal curves. Dial and box signed. Bowl 10 cm., box 15.5 x 15.5 cm. Property of Various Owners