1965 REGISTERED AIRMAIL LONDON TO CANADA WITH 10S CASTLE. Envelope, 228 x 153 mm sent registered airmail London to Toronto, Canada with very fine lower left corner marginal 10s Castle cancelled fine 'TRAFALGAR SQUARE' date stamp 30 JU 65. On front Canadian date stamp JUL 2 1965. Fine and attractive single usage. (Ref 142234).
