2002 37c Flag, non-denominated booklet stamp, 'USPS' microprinting in top red stripe of flag

U.S. #3623
37¢ Flag
Nondenominated Rate Change
Booklet Stamp with Micro “USPS”

Issue Date: June 7, 2002
City: Washington, DC
Printed By: American Packaging Corporation for Sennett Security Products
Printing Method: Lithographed
Perforations: Serpentine Die Cut 11.25 x 11
Color: Multicolored

The non-denominated flag stamp was issued in six formats, to pay the postal rate increase for first-class mail.