AN EARLY GEORGE III SILVER PAIR CASED WORLD TIME POCKET WATCH

AN EARLY GEORGE III SILVER PAIR CASED WORLD TIME POCKET WATCH, London 1763, the white dial with black (London), red (Calcutta) and blue (Jerusalem) Arabic and Roman numerals, the verge movement by Jonathan Prescott of Liverpool numbered 60, with foliate pierced and engraved balance cock, in plain inner and outer cases