Pair-cased watch by Jeremy Gregory, c. 1670. Outer case covered with leather and studded with gold, the inner made of rock-crystal with gilt mounts. Silver dial with decoratively engraved centre and single hand. Movement with verge escapement, tulip pillars and worm-and-wheel set-up regulator. Signed on the backplate ‘Jeremie Gregory att the Royal Exchange’. Clockmakers' Museum No. 38 Pair-cased watch with rock crystal inner case by Jeremy Gregory 1670
Rock crystal pendant, carved in form of hand in fig gesture, apotropaion, De Mortillet collection, French, 1861-1920 Rock crystal pendant 1861-1920
Circumcision knife with stragil blade, rock crystal handle and gold mounts, leather sheath for blade, form the Hamonic collection, c.1700 Circumcision knife with stragil blade 1681-1800
Watch by John Smeaton, York, 1645-1650. Faceted rock crystal case, set in a finely engraved gilt-metal frame. Gilt-metal dial engraved with an angel with outstretched wings, foliage, rabbits and squirrels, and a lakeside scene to the centre. Silver chapter ring and blued steel hand. Fusee movement with verge escapement, a train of three wheels, worm and wheel set-up and screwed on cock. Clockmakers' Museum No. 1512 Watch in a rock crystal case by John Smeaton 1645-1650