I recently picked up a small lot of these cards from an Auction House. I was told some of them were from 1948 and some were from 1974. As far as I can tell, they all look the same to me. The card stock is similar to other Exhibit cards from the 47-66 series. I have been researching this on the Internet but still see no differences.
I am showing you 4 of the cards. I was told that at least 1 of the 4 was from the 48 set.
I am asking the experts out there to see if they see any differences at all.
I didn't spend much money on it so I won't be upset if they are all from the 74 set. But I would love to figure this out.