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.
1978 Postal Card - Non-denom John Hancock
1991 29c Magazine Industry (Large)
1977 9c Postal Card - Federal Court Hoe
1978 10c Postal Card - John Hancock
1982 28c Air Mail Postal Card - Soaring
1985 44c Transpacific
1991 50c Harriet Quimby
1985 33c Alfred V Verville
2002 34c & 11c Semipostal - Heroes of 2001, non denominated
Stamped Envelopes