Grand Duchy of Warsaw - 1811

5 Groszy
Obverse - Grand Duchy of Warsaw - 5 Groszy - 1811 Reverse - Grand Duchy of Warsaw - 5 Groszy - 1811
Obverse - The Saxon coat of arms combined with the eagle of Poland.
Reverse - 5 GROSZY 1811
Mintmark - I. S.
Size, 19.5 mm.
 
A billon piece (195‰ silver), from a population of 11.6 million.