Jewellery, Watches and Objects of Vertu to include the personal archive of Louis Osman, goldsmith and architect

A George III gold cased verge hunter pocket watch by G M Field, London, the white enamel dial with black Roman numerals and gilt hands, the fusee movement signed ‘G M Field London’ and numbered ‘7736’, with pierced engraved balance cock and plain cylindrical columns, the case hallmarked for London 1796, with maker’s mark possibly LM, (first letter indistinct), the front cover engraved with crest of rampant lion beneath motto ‘PROMPTUS” and monogram below, (pin of internal hinge missing), diameter of watch case 54mm. £400-600