when I'm at a card show, and I have the time, I'll thumb through the '52 Topps cards and look for the rare gray backs. After many many tries, I found one at a show in "The Villages" (a retirement community in Central Florida). $5 bargain box pick up. I almost never sell cards, but this one I was going to sell. I had it graded, and after talking it over with Patrick, I put it on eBay auction (starting price of $300). To bad a bidding war didn't break out, cause the card only got one bid.
Larry