Poland
Congress Kingdom (1815-1835) - Alexander I (1801-1825)
Av: Tsar's head to right and legend ALEXANDER AND THE KESAR SA. W. RUS. KING OF POLAND; Rw: Tsar's eagle with Polish Eagle on ermine mantle, below letters I - B, in rim inscription 10. ZŁOTYCH - POLSKICH / Z SREBRA KRAIOWEGO
silver 30.65 g, extremely rare vintage, patina