POLAND. Grand Duchy of Warsaw. Friedrich August von Sachsen (1807-1815). 5 Groszy (1812).
Obv: Crowned coat of arms. Rev: 5 / GROSZY / 1812 / I. B.. Legend in 4 lines.
Kopicki 3686.
Condition: Very fine.
Weight: 1.93 g. Diameter: 18 mm.