[mbodow1]

I could not find any information online or any completed auctions on the Bay for the 1989 Upper Deck Blank Back "Sample Not For Resale" stamped backs. Does anyone on here have any information? Website? Very interested in learning anything about these cards.

[jacobystealshome]

To test the marketability of their first premium set, and in efforts to acquire a major league baseball license, Upper Deck first produced sample cards of their first baseball card set design, and didn't find it necessary to create a back design, so these cards are "blank backs," which means simply, they have clean white blank backs. These cards were actually produced in 1988, as part of a small group of test cards to herald their 1989 debut. The players chosen to demonstrate this new type of baseball card - which was responsible for changing the entire card industry practically overnight, and resonates to this day as the hobby standard - were then-Yankees John Candelaria and Rafael Santana.