Swiss Gold and Enamel Pair Cased Verge

A mid 18^th Century Swiss verge in gold and enamel pair cases.  Full plate fire gilt movement with pentagonal baluster pillars.  Pierced and engraved masked cock, pierced and engraved foot and plate for the silver regulator disc. Fusee and chain with worm and wheel barrel setup between the plates. Plain three arm gilt balance, blue steel spiral hairspring. Signed white enamel dial with Roman and Arabic numerals, decorative paste set hands.  Plain gold inner case, gold pendant and bow.  Gold outer case  the back decorated in polychrome enamel with an oval portrait of a lady within a foliate border.   Paste set front bezel.