Hi-
I actually posted about a Gehringer item that is very similar back in 2009 with no responses. I am 99% certain it is not from the 30s/40s. I believe they are a hobbyist produced item from the 70s. I have it in my mind that they were maybe produced for a specific show. I want to say I remember seeing them in a Trader Speaks or SCD from the late 70s but I am not positive.
https://www.net54baseball.com/showth...ight=gehringer
Alan