Post Cereal turned the world of young fans upside down in 1961 by putting baseball cards on the back of their cereal boxes.
It came from a time when baseball cards weren't investments--just something you bought at the store--or cut from the back of a cereal box.
Post Cereal entered the fray with its 1960 series, but really got serious in 1961 when the company put together a 200-card set that kids when crazy over. It was the first of a three-year run for the cereal maker.
The '61 Post Cereal set is full of variations--and superstars. It's an attractive issue for those putting together PSA-graded sets according to writer Kevin Putnam.