A fine and rare mid 18th Century English quarter repeating verge in diamond set gold and agate pair cases made for the Chinese market. Small full plate fire gilt movement with signed and numbered gilt dust cover. Pierced and engraved cock, silver regulator disc. Fusee and chain with worm and wheel barrel setup between the plates. Plain three arm gilt balance, blue steel spiral hairspring. Push pendant quarter repeating on a bell in the case. White enamel dial with Roman and Arabic numerals, fine blue steel beetle and poker hands. Gold inner case with decorative central engraving to the back. Pierced and engraved sides, decorative gold push pendant and stirrup bow. Unusual gold outer case in pierced and engraved repousse work, the front bezel set with four agate panels. The centre of the back set with a polished agate bearing a foliate setting of hand cut irregularly shaped diamonds.