Here are a couple of unused sample cards for Kenner’s 1997 Starting Lineup Baseball set. These cards are also sometimes referred to as proof cards. Proof cards or sample cards served many different design purposes including things like final approval of the packaging or mock-up packaging for presentations. These two examples came directly from the printing vendor contracted by Kenner, and is the same quality and thickness as the final production cards.
The cards measure 8″ wide by 9″ tall.
First version (535571.00):
Second version (535572.00) with different teams listed on the back: