Overview: This 29-card set was distributed inside bags of Dan-Dee Potato Chips. Because they were packed directly against the chips, they are famous for having "grease stains" (which the hobby actually views with some affection as a sign of authenticity).
Key Features: The cards are unnumbered and feature a "waxed" finish on the front to protect them from the chips. It includes a heavy concentration of Cleveland Indians and Pittsburgh Pirates, alongside stars like Mantle and Duke Snider.
Short Prints (SP): The cards of Walker Cooper and Paul Smith are notorious short prints and are significantly harder to find than the rest of the set.