500 Zlotys Stanisław Leszczyński

Stanisław Leszczyński holds the unusual distinction of having been King of Poland twice — deposed after his first reign by Augustus II following the Great Northern War, then reinstated briefly under Swedish pressure before losing the throne a second time after Charles XII's defeat at Poltava in 1709. He spent the remainder of his long life as Duke of Lorraine, where he became a notable Enlightenment patron and founded what would become the University of Nancy.

This two-ounce gold issue belongs to NBP's ongoing Kings and Princes of Poland series, which has run across multiple decades and issuing authorities.