To the best of my knowledge it has not. I just had it over at my place doing a bearing service and it looks like a legit original to me. It was bought from an estate, owner claiming to have bought it new in 47.
I see threading in the right side hole so there was a screw in there at one time. Schwinn just drilled the holes then used a sheet metal screw for the badges and they're self threading. The Stutz badge has drive in? rivets so I have to assume that was done by an owner at some point.