It Doesn't Look That Special Until You See the Back
It looks like just another 1990 Donruss card, doesn't it? But it is not. Look at the back:
Yes, this is the Aqueous Test version of the 1990 Donruss card. It is believed that only about 2,500 of each card was made, a far cry from the 1990 Donruss production numbers. So these are pretty rare. There was one person I knew of that had this card on the Beckett forums, but I could never get into contact with them to see about making a deal. So, when this one showed up on Ebay, I had to try and get it. Besides, it is one of the rarest Padres cards and one of the few that I still needed.