Though uncataloged as best I can tell, this can't be terribly rare or valuable, since I just picked up a pair for $10 including the auction fee. It will be added to Numista in the coming days.
1633/2 Solidus, City of Elbing under Swedish occupation. KM-45
Obv: GA monogram, GVS ADO D G REX S (Gustavus Adolphus, by the Grace of God King of Sweden)
Reverse: Shield of ELbing in cartouche, SOLIDVS CIVI ELBING 33

