English quarter repeating duplex, Nicole Nielsen Circa 1862

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An English quarter repeating duplex with offset seconds by Nicole Nielsen in a gold half hunter case, hallmarked London circa 1862. Gilt three quarter plate keyless movement with steel Nicole patent winding work. Plain cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. Small brass duplex escape wheel and pivots with end stones. Slide quarter repeating on two polished steel gongs. Signed and numbered white enamel dial with subsidiary seconds offset at eleven o’clock, Roman numerals, blue steel hands. Slim plain 18 Carat half hunter case, recessed gold slide in the band. Clip on gold back with dark blue champlevé enamel of a monogram below a heraldic motif.
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Diameter: 50 mm
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Signed: Dent Watchmaker to the Queen 33 Cockspur Street London