Marine chronometer Rectangular mahogany box, lined with green beize, with brass carrying handles at the sides. Hinged lid with glazed viewing aperture and sliding mahoganny cover. A key-operated lock at the front. There is an inserted plain ivory disc in the lid front. Silvered brass dial with Roman hours I-XII within a minutes circle. Subsidiary seconds dial above VI. Plain blued-steel hour, minute and seconds hands. Movement contained in a lacquered brass bowl. One-day spring-driven movement, with fusee and Harrison's maintaining power. Jewelled bearings for train wheels in screwed settings. Earnshaw spring-detent escapement with Earshaw split-bimetallic temperature compensation balance and free-sprung helical blued-steel balance spring.

An00016759 001 l

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