Sigismund I the Old, Groschen 15(?), Danzig

A very nice piece with well-preserved luster. A rhinestone on the date.

Obverse: in the pearl rim crowned coat of arms of Gdansk, in the outer rim a legend beginning with a rosette:
GROSSVS*CIVI*DANC*1;

Reverse: in the pearl rim a royal bust in armor and crown, to the right, in the outer rim a legend beginning with a rosette:
SIGIS*I*REX*PO*TO*TO*CI*PR;