An English full plate gilt keywind fusee chronometer movement. Harrison's maintaining power. Plain cock with garnet endstone, compensation balance with two wedge shaped weights and timing screws, freesprung blue steel helical hairspring. Screwed in jewelling, escape pivots with endstones. Earnshaw type spring detent escapement. Fine white enamel dial marked "Chronometer 2059", subsidiary seconds, Roman and Arabic numerals.

• Signed __________Rivers & Son - Cornhill London 876
• Circa 1810
• Diameter 49 mm - Depth 16.5 mm
• Condition Excellent but the balance staff broken. Lacking hands.

The firm of Rivers and Son succeeded Daniel De St. Leu.

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