Hi. I hope the person who uploaded this photo ref.6303 finds my reply. In August 2025 I bought a lot from an auction,this lot was of postage stamps, withsome envelopes. My wife saw an envelope the information on & it piqued Yher interest. Addressed to Mr F.Joran 27 Three Arch Rd, Earlswood, Redhill, Surrey, U.K. Similar to yours from the same person but from Canada post mark 'Frobisher Bay' in 65 i.e. 1965. The ship was 'CCGS "Narwhal" off 318537'gross tons 2064.35,net tons 93478, Ottawa ( CCGS is the Canadian Cost Guard. ) YOURS A. & A. H.