Need help identifying year

I am trying to identify what year this pennat is from. Any help would be appreciated.

I have found several similar pennats, but none that are exact matches. I found one where the cardinal and bat are white with the same white lettering on a red felt background, and I found one where the cardinal and bat are colored (as in the picture) with the same white lettering on a black felt background.

I get the feeling this pennant is from the early 60s. An exact year would be nice to have.