A 19th Century Two-day Marine Chronometer, the silvered dial signed French, Royal Exchange London No 5284, Roman hour numerals, blued steel hands, subsidiary seconds and up-and-down dials, convex glass, movement top-plate finely engraved French, Royal Exchange London No 5284 , Earnshaw escapement, dovetail spring detent to side of banking block, later third wheel, cut bi-metallic balance, segmental heat compensation weights, blued steel helical balance spring, brass bowl and gimbal in replacement 3-tier brass-bound rosewood case with flush recessed handles -- box 6½in (160mm) square (approx) (See illustration)
A 19th Century Two-day Marine Chronometer, the silvered dial signed French, Royal Exchange London No 5284, Roman hour numerals, blued steel hands, subsidiary seconds and up-and-down dials, convex glass, movement top-plate finely engraved French, Royal Exchange London No 5284 , Earnshaw escapement, dovetail spring detent to side of banking block, later third wheel, cut bi-metallic balance, segmental heat compensation weights, blued steel helical balance spring, brass bowl and gimbal in replacement 3-tier brass-bound rosewood case with flush recessed handles -- box 6½in (160mm) square (approx) (See illustration)
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
