A nice, well-minted piece.
Obverse: crown, rosettes on the sides of the crown, under the crown a legend in three lines:
SIG:III:D:G/REX-POL/M:D:L-.
Reverse: in the rim a corded eagle, in the outer rim a legend divided by a shield with the coat of arms of the Treasurer:
-GROSS-REG-POLO-1-6-11-;
