Important Modern and Vintage Timepieces

New York, Jun 12, 2012

LOT 150

THOMAS MERCER 36 HOUR MARINE CHRONOMETER Thomas Mercer Ltd, St. Albans, England, No. 27735. Made circa 1950. Mahogany, 2-day marine chronometer with power reserve indication. To be sold without reserve

C. Brass bowl with screwed-down glazed bezel, gimbaled in a two-tier mahogany box, glazed top. D. Silvered, with radial Roman numerals, outer minute track, subsidiary seconds, power reserve indication below 12. Blued steel spade hands. M. Brass with spotted decoration, ring-turned pillars with blued steel screws, fusee and chain with Harrison's maintaining power, Earnshaw's spring-detent escapement, Guillaume?s integral cut bimetallic compensation balance with cylindrical weights and meantime adjustment nuts, free-sprung special alloy helical balance spring with terminal curves, diamond endstone. Dial signed. Bowl 11.5 cm. in diameter, box 17 x 18 x 18 cm.