I believe this is the 1954 Mays SI Card, but how can you tell for sure? No-name TPG is usually red flag and the backs are usually white/whiter, but anything else to confirm for sure?
http://www.ebay.com/itm/1954-Topps-W...item3a83dc624e
**OK, just noticed it says so on the flip** Still wonder if there's something that tells you for sure?