Unknown Soviet hat. Please advise.

[Srdj]

I found this in a bag of military stuff and am curious about it. I did not take any photos of the inside as there are no markings whatsoever and it simply black.

[RichieC]

I am not really up and up on late Cold War pieces, DEMBELS, and tourist put-togethers, but if it is a regulation example, I will assume that it is for Soviet Naval Infantry.

[Dimas]

Richie is absolutely right