A rare pair-cased gilt-metal repeater pocket watch, in shagreen case, maker George Graham English circa 1720 4 cm diameter, 5.7 cm high, 5.5 cm case diameter. A rare pair-cased gilt-metal repeater pocket watch, in shagreen case, maker George Graham. English circa 1720. Gilt metal pair-cased watch, the inner box pierced and decorated with foliate designs and. animal heads, and a mask, the outer covered with green shagreen and holed at regular. intervals around the bezel and on the case to allow sound of the bell to be heard by the. wearer. Gold pinwork in a radial pattern to the shagreen on the back of the case. White enamel dial Roman hour numerals and outer Arabic minute numerals. Gold hands in. the continental style. Push-piece for the repeating mechanism protruding out of the top of the. pendant. Fusee movement, plain cylindrical pillars, pierced table of cock with a mask and diamond. end-stone, chased foot. Key operated silver adjustment dial. Signed on the back plate "G. Graham, London, 646". There is a steel bell housed in the inner box on which the hammer of the repeating. mechanism strikes. Reference: Graham was apprenticed to Herny Aske for seven years in 1688. He was admitted a freeman of the Clockmakers Company on completing his indentures in 1695 and immediately entered the service of Thomas Tompion.In 1696 he married Tompion's niece, Elizabeth. He was. elected a fellow and went into partnership with Tompion until Tompion's death in 1713. Graham developed the cylinder escapement and after 1726 introduced it into all his watches. He invented the dead-beat escapement in 1715 and the mercury pendulum in 1726. Graham was elected a Fellow of the Royal Society in 1721, and chosen as a member of the. council of that body in 1722; also in 1722 he became master of the Clockmakers Company. Provenance: Purchased by Edwin Dean from Lawrence Gould, in December 1971. Dimensions: 4 cm diameter, 5.7 cm high, 5.5 cm case diameter