Crescent China by George Jones & Sons, England. White mug in thick/heavy china. One pint capacity. 'R.A.F.' and King's crown within a blue circle to one side. No cracks or chips. Glaze generally good but there is some glaze crackling, minor firing faults and wear/soiling/discolouration. All this looks much worse on the photos than it really is! Displays very well. As used on wartime RAF bases. Good '+' used. Stock code C22458.