Poland, John Casimir, the Crown, Tymf (Zloty) 1665, Bydgoszcz mint.
Obv. DAT PRETIVM SERVATA SALVS; POTIORQ3 METALLO EST, the last letter T goes into the crown.
Silver, 6.59 g, 31.8 mm. Kop. 1788.
Grade: XF, very nicely preserved for this type of coin.