Vasa dynasty, John II Casimir (1648-1668), half horn 1662, mint Poznań, date in rim, VERY RARE.
Variant with PMD legend ending and shield in the rim, in the catalog of A. Górecki under number P.62.2b with high rarity F3 ("Coin available
in trade rarely, difficult to obtain")
silver weight 1.03 grams, diameter 19 mm