Cartier: A King George VI ¨5 coin containing a watch, with concealed catch in the rim, the matt silvered dial with Roman numerals and blued steel moon hands, the movement signed European Watch Co. Inc., jewelled to the centre with 18 jewels adjusted to temperature and two positions, the case No. 30274 4656 .A656. 3669, hallmarked London 1937, with casemakers mark E J and original presentation box