1962 REGISTERED AIR MAIL LONDON TO USA WITH 2/6 CASTLE. Envelope, 230 x 102 sent registered air mail London to Pennsylvania USA with fine 2/6d Castle and 3d Wilding cancelled 'REMNANT ST KINGSWAY W.C.2' 9 AP 62. On reverse 'PHILADELPHIA' date stamp APR 11 1962. (Ref 102399).
