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

A wristwatch, by Eterna, the signed black and grey dial with gilt Arabic numerals, outer seconds scale, and centre sweep seconds hand, jewelled movement signed and numbered ‘2920775’, the signed stainless steel case with snap on back, on later fabric strap, dial diameter 28mm. £80-120