Posted By:
petecldI'll second your claim. I own these cards. This is the one from 1977 issued by Den's Collectors Den. The first series contained no notice of the card being a reprint but after some cards got distributed, they began using a hand stamp on the back to mark the as reprints. Mine has the stamp on the back. As I recall, they sold them saying 10,000 sets were made. How many were sent out without the stamp? I don't know.
The next 2 series did have lines on the backs, as the dover reprints do, identifying them as reprints. You see these sold as uncut sheets on ebay today.