细节
An English mahogany and ebony-strung eight day mantel chronometer
Thomas Mercer, St. Albans, No.809. Circa 1946
The case with bevel-glazed panels to the top and sides and raised on adjustable bun feet, the engraved silvered dial with Roman chapters and signed THOMAS MERCER LTD ST. ALBANS, ENG., subsidiary seconds ring below XII, with up/down sector above VI, brass stop/start button between XII and I, blued steel hands, the single chain fusee movement with maintaining power, heavy rectangular spotted brass plates secured by four gilt-brass double-screwed baluster pillars, the gilt-brass rectangular escapement platform with cut bi-metallic balance with circular heat compensation weights, polished steel helical balance spring, Earnshaw-type spring detent escapement with jewelled locking stone, the brass seatboard punch numbered 809 to the underside; tipsy winding key
11¾ in. (30 cm.) high