
U.S. #4188
2007 41¢ American Flag
Issue Date: August 15, 2007
City: Washington, DC
Printed By: Avery Dennison
Printing Method: Photogravure
Perforations: Serpentine die cut 8 ½ vertically
Color: Multicolored
U.S. #4188 can be distinguished from its look-alikes by the lack of microprinting on the flag pole and vertical 8 ½ serpentine die cuts.