Rare Gold Champleve Dial with Glazed Sides

A fine rare early 18^th Century English champleve dial verge with glazed sides and cock in gold pair cases.  Deep full plate fire gilt movement the glazed sides retained by a silver ring. The ring is pierced and  engraved with architectural pillars and the number of the watch over the barrel.  Fusee and chain with worm and wheel barrel setup between the plates. Pierced and engraved cock with mask, the table glazed, a blue stone at its centre in a silver setting.  Pierced and engraved foot and plate for the blued  regulator disc with gilt markings.  Plain gilt balance.  Signed gold champleve dial with Roman and Arabic numerals, blue steel beetle and poker hands. Matching plain 22 carat gold pair cases, gold pendant and stirrup bow.  Maker's mark "SG" and number corresponding to that on the movement.