Superhero stamps

The Batcave Trophy Room featured these novelty super-hero stamps. Not my thing per se, but they look nicely executed.

Article on Mauldin stamps

Sidewalks: 1st-class cartoonist
Wartime cartoonist Bill Mauldin now has a U.S. postage stamp in his honor.
By Rick Kogan
Tribune Newspapers May 16, 2010