Alexander I (1815-1825), 50 zlotys, 1818, Warsaw; Av: Head of the Tsar to the right and an inscription in the rim ALEXANDER I CESAR SA W ROS KRÓL POLSKI; Rw: Two-headed Russian Eagle with the royal apple and sword in talons, below letters I-B (Jacob Benicke) and an inscription in the rim 26 Z GRZ CZ KOL / 1818 / 50 ZŁOT POLSK; Bitkin 805 (R), Fr. 105, H-Cz. 3526 (R), Kop. 2736 (R2), Plage 2, Berezowski 80 zl; gold, 9.79 g; scratches on obverse, copper patina.