I'll be honest, I don't know much about this coin.... but I don't see anything that points to fake. The texture and feel looks right.
See: https://en.numista.com/catalogue/pieces199157.html This site https://www.coinarchives.com/w/results.php?search=sforza shows it in an upcoming auction with an estimate of 200 euros. Authentic, I don't know. I would guess that it's the real McCoy.