English two-train independent centre seconds lever Circa 1875

Gold open faced quarter repeater
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A very fine and very rare English 18 carat gold open faced quarter repeating two-train independent centre seconds lever pocket watch, circa 1875. Gilt-brass movement, Ø 40 mm, two-train, 42 jewels, bimetallic compensation balance. A solid hinged cuvette. White enamel dial with Roman hours, outer minute/seconds divisions, subsidiary seconds at 6 o’clock and blued steel spade hands. An engraved case back with a blank cartouche. Dial signed, case and movement numbered.
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Diameter: 46 mm
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Signed: Richardson & Co. London