The visor is a legit Erel Officer's white-top.
Very rarely do you see EM/NCO metal insignia on an Officer's visor hat, but it did happen.
You have to check the pasteboard for signs that it had bullion insignia (ie, empty thread holes).
If that is the case, the original insignia was removed and replaced.
If no empty holes, the metal insignia is original to the hat.
NEC SOLI CEDIT
Thanks everyone for all the info, it's been a great help.