strange navy cap

[Al-muell]

I really don't know what to think of this one.
It was quite ceap (like standard navy senior officer's one).
It has the label with date 1959 (it may be 1969, but it looks more like 5), but the crown is as big as those from 80., but the crown's frame seems to be the part of the white cover (???), not the crown itself. Than there is this visor (like admiral's), but the inside does not seem to differ from standard enlisted/officer.
In addition there's no trace of any badge (and I think that even a cloth badge should leave a trace when removed).
Any ideas? a mix of parts? a theatre/film costume?

btw, the buttons look old, but i cannot read the date (should be there, but I don't want to remove them and without that it's impossible).