A French two colour gold, diamond and colourless gem set fob watch, the gilt fusee movement with ver

A French two colour gold, diamond and colourless gem set fob watch, the gilt fusee movement with verge escapement and scroll pierced balance cock, the backplate detailed 'Le Pine à Paris 3598', the enamelled dial with black Roman hour numerals and outer Arabic minute numerals, the case back decorated with an enamelled portrait of a lady within a colourless gem set surround with a two colour gold floral border, total weight 55.3g, case diameter 4.2cm, with a key.