This is about as unusual as any baseball team hat or cap that I have come across.

I can’t find anything similar.

I call it a cheer hat maybe it was a promotional item back in 40-50 years ago?? Has music notes looks like so I thought cheer.

Only marking is in picture Prince Hat/cap

Bright colors looks to never have been worn.

Nice collectible

Check out my other loads of new and vintage hats listed