1963 Fleer Baseball Forum

Has anyone ever seen these cards that have the back stamped line the one in the photo:

https://postimg.cc/RNct1f2L

Is there any significance to the stamp?

TWA Campus Reps were college students who sold plane tickets to other college students. I'm guessing one of them owned this card in the 1971-72 school year, or possibly gave it out as a promotion.

Thanks.  That's cool. 

I wonder if there is a way to track down who the specific rep was?  Could make for an interesting story to reunite them with their card.