promised a few weeks back, this is the second of two USPS issued postcards to tie into the DC Comics stamps which were released in 2006. This one features the cover to The Brave & The Bold #36, the first appearance of the traditionally most well-known of Hawkman's foes, the Shadow-Thief. (Nowadays one can make an argument for the Gentleman Ghost, but that's another post.)
Still a bummer that I never saw these postcards in the post office. But them's the breaks in the hardcore, underground world of comic book collectable tie-in merchandise.
Image: Hawkman postcard, 2006, Joe Kubert, image obtained from eBay.