An early vintage of the shekels of the joint reign of the Princes of Kettler.
Distinctive iconography: with the monogram of the Polish ruler on the obverse (letter S from SIGISMUNDUS, with a shield with the Vasa coat of arms), but without his titulature in the rim.
Variety with the full date "1600" in the obverse legend.
Rare and, above all, beautifully minted and preserved.