Vasa dynasty, Jan II Kazimierz (1648-1668), 30 groszy - zloty (tymf) 1664 AT, Bydgoszcz mint
legend: no punctuation in POTIORQ3METALLOEST, end of inscription ...SALVS.
letters AT - Andrew Tymf, deficient on crowns on both sides of the coin
silver, weight 6.63 grams, diameter 30 mm