Hello all! A few months ago I bought a helmet in the Czech Republic as I’m somewhat of a hat/helmet collector. Naturally, I tried to research who used this and when it was used without any luck. Help!!

Information:
It appears to be a ‘fake’ Adrian helmet
Some said that it may have been used by a Czech police/firefighting force
There’s a Czech seal on the front which appears to have been puttied on (see pictures)
There IS writing on the innards. It appears as though it was manufactured by ‘Fabre’ and the words under that I can’t decifer, although my initial thoughts were "Ganoure", "Canoure", "Cancue", "Canourgue", or perhaps even Cancun, hehe. (See pictures)

Pics:
Screenshot by Lightshot
Screenshot by Lightshot
Screenshot by Lightshot
Screenshot by Lightshot

Thanks for your time, and good luck! :p