An 18ct gold, diamond and mother o’ pearl ‘Delirium’ lady’s wristwatch, by CONCORD, the rectangular dial centred with a signed circular blue mother ‘o pearl panel within a white precious metal chapter ring with black Roman numerals, within square surround pavé set with small brilliant-cut diamonds, to a black border, the reverse bearing European convention marks and numbered ‘81/60,90,669 DM 952934’, with a pavé set brilliant-cut diamond bezel and shoulders, to a black ‘crocodile’ leather strap, signed ‘Chopard’, watch head length 27mm. £600-800