I'll likely keep the ball for my Braves/Giants collection. It was part of a larger lot of vintage cards (54T's, I think) and some old magazines. Granted, I always thought the ball was not a facsimile ball, so I may have payed a premium for the lot. But over the course of my 40+ years of collecting, I've had some good deals, and some bad ones. Part of being a collector. It's all about education when you choose to venture beyond your comfort zone
Thanks again for the replies!