Unissued and Unlisted London 1990 Overprinted and Surcharged Souvenir Sheet, this is the London 1980 sheet of six, surcharged with six different values in bright magenta, with inscription "Alexandra Palace / 3-13 MAY 1990" in lower margin. Only the 5 lower value singles are listed in Scott (#s 736-740) but not the high value stamp nor the souvenir sheet. Postmarked "G.P.O. Plymouth / Montserrat / 3 MAY 1990", very fine. (Image)

Est $ 100