Looking at a small collection up for sale, and this coin stood out due to it's age and country of origin. I believe it to be a 1623 Ort Koronny, however I have not been able to find an exact match.
What bothers me in particular are the details/swirls on the side of the shield on the reverse. Compare for example this auction piece to the coin for sale:
Anybody with more knowledge (or better google-skills) able to comment on wether this is genuine or not?
(And before anyone asks, I have not been able to get any better photographs from the seller nor any information regarding weight or diameter…)

