This 1964 Topps Salesman’s Sample Ad Card featuring Mickey Mantle was auctioned off in August 2006.
It’s encapsulated as “authentic” by PSA and was used to drum up interest and give a sneak preview to dealers and collectors for the 1964 Topps Baseball series. The triptych (a picture or carving in three panels side by side) measures 7-9/16” x 3-1/2” with Mickey Mantle, Jim Davenport, and Boog Powell on the front. While the auction didn’t include a photo of the back, they described it as having information about the prospective series’ special features and insert products and also had a Mantle card back as a design example.
Heritage resold the same item in December 2020 for $7,200; they wrote, “One of the fuels that drove the Topps machine was the salesman sample. They featured three cards but had Topps sales propaganda or a sticker selling the set on the reverse. For their 1964 effort, they wisely picked baseball’s best in HoFer Mickey Mantle to promote the upcoming 587-card series. Mantle is joined by fellow major leaguers Jim Davenport and Boog Powell but it is Mantle’s card used for the reverse example.”
If you own any salesman samples, I’d love to chat with you about them for my research.