A Swiss vari-coloured gold and enamel verge watch

A Swiss vari-coloured gold and enamel verge watch, the white enamel dial signed Isaac Soret & Fils, Roman hours and outer Arabic minute ring, signed movement also numbered 17739, the case back decorated with a bird and a basket of flowers in an oval within a yellow enamel band, all within a band of enamelled leaves and rose diamond set flower heads, the front bezel set with rose diamonds, circa 1770, 39mm diam.