A rare 18th Century skeletonised quarter repeating Swiss verge with glass dial in a stone set consular case. Full plate fusee movement with three round pillars. The plate and barrel cover pierced and engraved to reveal the trains and blue steel mainspring. Engraved cock, polished steel coqueret set with a garnet, small circular blue steel regulator geared to a plate carrying the index pins. Plain three arm steel balance. Push pendant a toc quarter repeating on two blocks in the case. Winding through the rare glass dial which reveals the polished steel quarter repeating work below. Underpainted white Arabic numerals, decorative gold hands. Double sided two colour gold consular case, the bezels set with a row of white stones.