Picked this up on ebay recently for the Animated Batman collection.
1993 Promo Card
Batman walking; unnumbered, oversized; Previews
This was a dealer promotional card for 1993 Topps Batman The Animated Series Trading cards Series Two. A 5x7 card with an insert of a regular-sized card typical of the Series Two set to be released. Topps nailed it with the card they selected for the promo.
I suppose you could cut the actual promo card from the oversized card if you wanted to.
I will not.