These things pop up fairly frequently and are somewhat annoying, since it is distressing to think someone is going through old Spalding guides with a pair of scissors and then calling them "cards." I bought this one recently, with full knowledge of what it was and what it was worth, simply because it was my relative.
http://www.ebay.com/itm/351129736021...%3AMEBIDX%3AIT
At least the seller's description was quite clear about what it was.