A nice piece.
Variety with two trilobes.
Obverse: in the pearl rim the crowned coat of arms of Gdansk, in the outer rim the legend beginning with a trilobed:
GROSSVS*CIVI*DANC3*1535;
Reverse: in the pearl rim a royal bust in armor and crown, to the right, in the outer rim a legend beginning with a trifoliate:
SIGIS*I*REX*PO*TO*TO*CI*PRV;