Can anyone tell me anything about this coin. [επιλυμένο]

it is from Libya and it is damaged...

Indeed, a 1975 50 Dirhams of Libya:
https://en.numista.com/catalogue/pieces4459.html

Thank you.

I bought it for only around 30 cents.

You could go to Search then Options and Special keyboard then Arabic
and put in the three visible numbers ٥٠ and ١٩٧٥ and ١٣٩٥ then click Search button ...

https://en.numista.com/catalogue/index.php?mode=simplifie&p=1&l=&r=++%D9%A1%D9%A3%D9%A9%D9%A5+%D9%A1%D9%A9%D9%A7%D9%A5+%D9%A5%D9%A0&e=&d=&ca=3&no=&i=&v=&m=&a=&t=&dg=&w=&u=&f=&g=&c=&tb=y&tc=y&tn=y&tp=y&tt=y&te=y&cat=y
and your coin is in the 12 results ...
https://en.numista.com/catalogue/pieces4459.html
which I see while typing all that, someone has just now added the link above.