A stamped envelope or postal stationery envelope (PSE) is an envelope with a printed or embossed indicium indicating the prepayment of postage. It is a form of postal stationery, and a neat addition to any stamp collection.
1962 8c Air Post Envelope, red
1947 5c Air Post Envelope, carmine
1967 13c Air Post Envelope, red & dark blue
1968 10c Air Post Envelope, red
1965 11c Air Post Envelope, red & dark blue
1961 11c Air Post Envelope, red & blue
1971 11c Air Post Envelope - Jet Plane
1929-44 6c Air Post Envelope, orange, die 2c
1958 5c Air Mail Postal Card - Eagle
Stamped Envelopes