European coin 17?0 [επιλυμένο]

I have an old coin (that seems to be European). The writing is not clear, so I can't google for that.

It seems to have the year 17x0, with the "x" not being readable (most likely 3 or 5).

Your coin is from the Prince-bishopric of Liege.
The lettering is unclear but you can check the weight to see if it is 1 liard 1750 (https://en.numista.com/catalogue/pieces5432.html), 2 liards 1750 (https://en.numista.com/catalogue/pieces12783.html) or 4 liards 1750 (https://en.numista.com/catalogue/pieces29736.html).

Thank you. It's a 1 liard 1750 indeed.