Was Just wondering What series or What Boxes these Game JErseys Came out of?
FRom my understanding this is Upper Decks First Jersey Cards?

How many are in the set?
If anyone has any Cheap, I would be maybe interested in.
Mainly looking for more info on them now.

Where to break them?
and
How many are in the set?
Were they in fact the first Upper Deck JErsey Cards?