When it comes to screen shots - even top quality screen shots,
I have to admit that is is very difficult from screen shot examination only,
to distinguish genuine from a high quality pressure diecast fake.
You have to have lots of experience and knowledge about the die variations of the genuine, and compare with the suspected fake.
Especially so, with milled silver coins, from 1800 and earlier.
Other opinions are going to be better than mine in this regard.
John Davenport warned decades ago of the existence of good quality fake European crown sized silver coins.
So you have to resort to some of the investigation techniques used for ancient coins.
Provenance, weight and XRF, together with knowledge of fake and genuine manufacturing methods can help.