Just checked the Charlton guide and it states that these were issued one per pack. They are unnumbered and were folded to fit the pack. What I found most interesting is that while this was an American issue, the bill itself seems to resemble more of the Canadian currency of the time. It is even bilingual.ie " ONE 1 UN "
The Charlton lists your Hall at $80 in NRMT condition. There are 24 different in the set.