These cards are produced as tickets/promotionals to a Star Trek
night at an Australian Disco. The backs have info about the night in question.
Many of them have a small ink marking, the initals of the person passing
them out. All the generations one I have seen have a mark. The size
of the scan for the movie Enterprise is misleading, they are the same
size. The difference is in color of the text and the back color as well.