An antique Polish silver 1667 6 groszy silver coin. The obverse features a crowned and armored bust of Johan Casimir right with a lettering: IOAN CASIM D G REX POL SUE around and on the reverse there is crowned two shields and Vasa coat of arms in a round shield inside the border. Lettering around: GROS ARG SEX REG POL 1667 VI TL B. Graded as F-12 by the National Numismatic Certification. John II Casimir, 1609 to 1672, was King of Poland and Grand Duke of Lithuania from 1648 until his abdication in 1668 as well as titular King of Sweden from 1648 until 1660. He was the first son of Sigismund III Vasa with his second wife Constance of Austria. John Casimir succeeded his older half-brother, Władysław IV Vasa. Antique Coins For Collectors, World Coins, Monetary Numismatic Collectibles.