| A mid 19th Century Swiss centre seconds duplex for the Chinese market in a silver open face case. Keywind gilt bar movement with richly engraved plate, bridges and suspended going barrel, polished steel regulator, blue steel stop work and screws. Polished steel three arm balance with three blue steel affixes,
spiral hairspring. Duplex escapement, brass single tooth escape wheel. White enamel dial with Roman numerals, centre seconds, blue steel hands. Plain silver open face case, wound and set through the engraved silver sprung cuvette, silver oval pendant and bow.
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