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

A stainless steel Oyster wristwatch head, by Rolex, circa 1950s, the cream dial with black Arabic numerals and outer 0-60 minutes scale, signed ‘Rolex Oyster, shock-resisting’, with openwork hands, signed 15 jewel movement, stainless steel case with signed screw down back, replaced base metal crown, dial diameter 28mm. £500-700