English centre seconds lever watch in a gold case Circa 1893

Gold centre seconds half hunter
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An English centre seconds lever in a gold half hunter case, hallmarked London circa 1893. Gilt three quarter plate keyless movement with going barrel. Engraved cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. English table roller lever escapement. Screwed in jewelling, escape and lever pivots with endstones. Signed white enamel dial with centre seconds, Roman numerals and blue steel half hunter hands. Plain 18 carat half hunter case with blue enamel chapter ring, engraved monogram on the back cover. Maker’s mark ‘JWB Ld’ in a rectangle and number corresponding to that on the movement.
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Diameter: 51 mm
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Signed: J W Benson 62 and 64 Ludgate Hill London By Appointment to HM the Queen