Watch List notes:

Poland 6 Groszy 1596 Malbork. Sigismund III Vasa (1587-1632). Averse: Crowned bust right. Reverse: Value and armorials above legend and date. Silver. Old patina. Kop. 1240 (R1); Kopicki (ZIIIW) 904 (R1) RARE NGC MS 64 TOP POP