Jewellery, Watches and Objects of Vertu

R. Laurent Jouvenat et Cie. A silver dual time duplex watch with jumping seconds and date, made for the Chinese market, circa 1840.
Movement: gilded, duplex escapement, unusual Chinese calibre.
Dial: white enamel, two subsidiary dials for dual time, Roman numerals, subsidiary seconds, outer Arabic date indication.
Case: silver, engraved cuvette, engine-turned rear cover with initials within a cartouche, no.5104, maker’s mark CF.
Signed: cuvette signed R. Laurent Jouvenat et Cie, London.
Dimensions: diameter 48mm.
£100-£150