U.S. #2520a
1991 29¢ Flower
“F” Rate Change Booklet Stamp
Issue Date: January 22, 1991
City: Washington, DC
Printed By: KCS Industries
Printing Method: Photogravure
Perforations: 11
Color: Multicolored
Since 1978, the USPS has accompanied a change in rate with a non-denominated stamp on which a letter of the alphabet represents the new denomination. Prepared long in advance, the 'F' stamp was ready and waiting for the 1991 rate change.
Like the 1988 'E' stamp, the subject of this stamp, a single red tulip, was chosen to match the letter 'F.' Printing contracts were awarded to three different companies. The United States Bank Note Corporation was assigned to produce sheet stamps, the BEP printed coils and booklets, and KCS printed booklets.