1949 REGISTERED MAIL LONDON TO CANADA/B.P.A. Envelope registered mail London to Toronto with KGVI 1d pale scarlet (SG486), 3d pale violet (SG490) and 1s bistre-brown (SG475) cancelled LONDON 4 MAY 49, also on front "PASSED BY BRITISH PHILATELIC ASSN..." cachet and on reverse H. R. Harmer sealing tape. (Ref 100568).
