Player/year identity help
 

I was wondering if this was some sort of exhibit or postcard. It is heavy stock and blank backed. The #20 is in pencil. There is no indication that is a postcard, but I'm not sure. He is a Houston Buffs player. I'm not sure if the picture is during the war, right after, or maybe later 50's. I'm hoping that someone with better knowledge can help me. Danke.