Not exactly stamps, but...
Marvel Value Stamps reproduces another piece of Marvel history: special stamps that ran in issues in 1974 and 1975. Readers who collected all 100 stamps in a special booklet could turn them in for prizes and discounts. "It completely ruined the Silver Age comics," Kochman said, because so many readers cut them up. The book includes the original stamps (and the letter pages they came from), booklets, and other artwork used for the program, with text by former Marvel editor Roy Thomas. The hardcover book will be released in May with an MSRP of $24.99.