A beautiful piece. Item found mostly in circulated condition, very rarely better than 3+.
Undescribed in Kaminski and Kurpiewski variant without rosettes at the Wieniawa coat of arms and without a dot after IOAN, only with dots in the reverse legend.
Obverse: eagle with wings upwards, on its sides initials C-G, in the rim legend:
IOAN CAS-D-G-POL-& SVEC-REX-;
Reverse: crowned inscription:
16.II.50/GROS-ARG-/DVP-REGN-/POLONI- and Wieniawa coat of arms.