The 1991 Upper Deck Denny’s Grand Slam Hologram cards were so popular that the partners doubled down on the promotion the following year with this awesome teaser ad that I pulled from the August 1992 edition of Baseball Cards Magazine.
![](https://i0.wp.com/www.postwarcards.com/wp-content/uploads/2024/04/BBCardsDennysAugt1992.jpeg?resize=569%2C800&ssl=1)
Denny’s then ran this ad the next month, showcasing the cards.
![](https://i0.wp.com/www.postwarcards.com/wp-content/uploads/2024/04/BBCardsDennysSept1992.jpeg?resize=549%2C800&ssl=1)
Denny’s partnered with Upper Deck for six total releases (1991-1995) before switching to Pinnacle for their 1996 and 1997 sets.