Trust me on this, it exists. During that time when the BUGS BUNNY stamp first came out, the POST OFFICE gave out catologs which shown the comic. I had one of the catologs, but not now. The only way to get the comic book was to join thier STAMPERS CLUB. I already was a member. The PO did this sort of thing a lot around that time with the release of new stamps. Even though I never got to see the actual comic, there it was in the catolog. I would think someone out there must of joined STAMPERS and got one. STAMPERS CLUB was still going in 2000 as I remember. One thing I remember though, once in a while items were no longer available. I ordered Chinese New Year DRAGON stamps from them that included CARDS of the different animals of the years. Well those got cancelled on me. But then on the other hand I ordered UNIVERSAL MONSTER stamps that included CARDS. They told me they were cancelled, but guess what, they arived. I still have those and have never seen anyone that had um. I wonder if I'm the only one that got them?
Ive never even heard of these stampers things, but sometimes, a picture in a catalog of the cover of a comic book doesnt mean the comic was ever produced and relessed. So the proof isnt necessarily in seeing one in a catalog...