Another recent find is this 1997 Donruss Press Proof Interleague Showdown #447.
The card features the Angels Tim Salmon and the Dodgers Raul Mondesi squaring off in Interleague Play on June 17, 1997. I first assumed that the card was released prior to the matchup, but the back of the card says, "...when they visited Dodger Stadium June 17-18." meaning it was released afterwards, but the card back doesn't give the results of that matchup.
So let's look it up and see who did better, Salmon or Mondesi.
In the 2-game series:
Salmon 3/7 (HR, 2B) 3R, 1RBI, 2W, 4K
Mondesi 2/7 (HR, 2B) 2R, 2RBI, 1W, 1K
Wow, that's pretty much the identical results.
And the Dodgers won both games.
Who won the showdown?
You make the call.