Aden. (Khormaksar). 1942. Envelope written from the RAF Station at Khormaksar addressed to California bearing Aden SG 21, 2 1/2a blue tied by Aden date stamp with framed 'R.A.F. Censor/Khormaksar' on face routed west with 'Opened by Censor/PC 22' label tied by framed 'Passed by Censor/No 3/ Aden' in violet on face, underpaid with New York/Due 4 cents' duplex and bearing United States postage dues SG D692, 2c red (pair). A very nice item of underpaid R.A.F. mail from Khormaksar.