Lot 456

William Gravell, London, 54 mm, 158 g, circa 1850
A heavy English pocket chronometer with spring detent escapement according to Thomas Earnshaw
Case: 18k gold, case maker's punch mark "JR". Dial: enamel, off-white. Movm.: full plate movement, chain/fusee, bimetallic chronometer balance with 2 screws and 2 movable trapezoid weights.

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