90¢ World Stamp Expo ‘90
Issue Date: November 17, 1989
City: Washington, DC
Printed By: Bureau of Engraving and Printing
Printing Method: Lithographed and engraved
On November 17, 1989 - the opening day of the World Stamp Expo '89 - this souvenir sheet made its debut. Its first-day ceremony was only the first of eleven similar ceremonies that were held during the philatelic exposition.
U.S. #2433 pictures the classic 1869 Abraham Lincoln Pictorial stamp (U.S. #122) in four different colors – the issued color plus three of the trial proof color combinations. The souvenir sheet was issued imperforate and was the first in that form since the SIPEX sheet of 1966.