You are bidding on a package containing 4 dinosaur party favors (one looks like a T-rex and another looks like a pterodactyl; not sure about the other two). This item was produced in 1985 by Unique Industries.
The party favor pack is still sealed, but there are two small vents on the back of the card that apparently have let in a few small specks of debris (see pictures).
See pictures for more details.
If you have any questions, please let me know. Thanks for looking!