A rare mid 19th Century enamelled duplex for the Chinese market in a plain gold case. Keywind Tixier calibre movement with gilt champleve blue and white enamel cock, bridges and suspended going barrel. Silvered engine turned plate. Garnet endstone in a gold engraved setting, polished steel regulator. Blue steel stop work and screws. Polished steel three arm balance with three blue steel affixes, spiral hairspring. Steel crab tooth duplex escape wheel allowing the hand to appear to beat seconds. White enamel dial with Roman numerals, centre seconds, blue steel hands. Plain gold open face case, gold oval pendant and bow, button to release the back cover. Glazed gilt sprung cuvette with apertures for winding and hand set..