细节
A GEORGE IV MAHOGANY MARINE CHRONOMETER
CHARLES YOUNG, LONDON. CIRCA 1820
The box with some alterations and lacking gimbals and front roundal, the 75 mm. diameter engraved dial signed 'No.72/CHARLES YOUNG', recessed seconds, gold main hands and blued steel seconds, the single chain fusee movement with recessed detent escapement, three-arm bimetallic balance with unusual sprung stud to blued steel flat balance spring; later winding key
The box--5½in (14cm.) square