Early English 18K gold open faced precision lever Circa 1830

Gold lever deck watch by Henry Parkinson
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An early English 18 carat gold open faced lever deck watch, circa 1830. English precision lever movement, diamond endstone, screwed gold chatons, chain/fusee, large balance, splendidly engraved gilt cock with grotesque face. Perfectly preserved white enamel dial with Roman hours and outer minute divisions, large seconds indication for observation purposes, original gold hands. Plain case, engine-turned band, London punches for 1830, original dust protection ring. Movement signed and numbered.
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Diameter: 53 mm
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Weight: 132 g
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Signed: Henry Parkinson London