I have a little info. I just purchased a small group of these to fill in players or execs that either don't have cards or are rare/expensive. The size is 2 3/8" H x 1 1/2" W. It's a thin stock with a semi-gloss surface. I would compare it to a playing card in feel and look. I emailed the guy on ebay about the players I needed and he cut a deal off his price. They cost about $4 ea. but were well worth it to fill those impossible holes in my HOF collection. They are definitely NOT standard issue cards, I wouldn't be surprised in the least if he made them himself. I attached a front and back scan of the Frank Grant card. All the backs look like that. He also has 2 other designs, one that says Flip Trade Collect on the front (like a T206 size) and an anti-tobbaco back advertisement. All players were not available in all the types. His name is Jeff and goes by oak-vault on ebay. Take it for what it's worth.
