George III silver Benjamin Barber triple cased pocket watch, made for the Turkish market. 64 mm tortoiseshell and silver plate outer case with studded detail, silver inner cases hallmarked London 1792 by James Richards, (specialist case maker). Signed white enamel Ottoman dial. Signed fusee verge movement. Held in three cases this is a typical example of the so-called 'onion watches' The name, originally used in France (montres oignons) coming from the protective, layered cases and their relative rotundness. Watches made for the Ottoman markets invariably had a second or, more often, third outer case generally covered in tortoiseshell. In this example, the exterior case is made of reddish brown tortoiseshell and decorated with the pique technique, a method of silver studding, that was not only decorative, but also protected the tortoiseshell from wear.