In 1994, Upper Deck and Denny's teamed up to produce a 28 card set to honor a slugger from each MLB team. There was also a special limited edition card produced of Reggie Jackson. Each Denny's location was given a single copy of this card to used in a giveaway at the end of the promotion.
I wasn't able to pinpoint how many Denny's were around in 1994, but according to Wikipedia there are almost 1,600 diners currently in the States. That means there were probably anywhere from 1,500 to 2,000 of them back in the mid 90's.
These days when a card company makes 2,000 copies of one card, collectors treat it as if there were 2,000,000. However... back in the day... 2,000 was pretty limited. Maybe not exactly super rare... but definitely limited.
I've been looking for a copy of this card off and on for a few years... and after lots of patience... I found a eBay vendor willing to accept my $9 offer. I realize that might sound like a lot of money for some Junk Wax Era insert... but when you factor in how long I've waited to add this card to my Oakland A's collection and the prices other vendors typically ask... I think I got a pretty good deal.
Happy Flashback Friday... and sayonara!