A silver and tortoise-shell pocket-watch made for Turkish market Circa 1842. A silver and tortoise-shell pocket-watch made for Turkish market. Circa 1842. Four cased (silver, tortoiseshell and wood) watch made for the Turkish market. Both inner. box and the first of the outer cases are plain silver, hallmarked London 1842. The case also. bears the casemakers mark "JB', possibly Josiah Barnett who is listed in Grimwade as a. casemaker having his mark entered and re-entered from 1819 to 1835. There is a second. outer case made of tortoiseshell (actually Hawksbill Turtle shell) decorated with silver. pinwork, and yet another further outer case made of wood which is high-domed and. completely encloses the watch. Long round pendant, oval bow. White enamel dial, marked "Edward Prior, London", black Turkish hour numerals, blued. steel beetle and poker hands. Key wind, fusee drive, verge escapement. Ornate pillars and fusee stop, pierced and engraved. balance cock decorated with foliate pattern. Silver regulator dial. Signed. "Edward Prior, London, 58662". Reference: Edward Prior carried on business in Clerkenwell at first alone and then in partnership with. William Chambers. He specialised in making watches for the Turkish market, reproducing. the style current in the mid-18th century. This particular example is typical, complete with all. cases. Provenance: Purchased from St. John Reid, Little Collins St., Melbourne.