State Emblem of People's Republic of Poland - crownless eagle with head turned left and outstretched wings, flanked by year 19-80. Mintmark under talons.
Around POLSKA RZECZPOSPOLITA LUDOWA, below Zl 2000 Zl
Description reverse
Crowned bust of King Kazimierz I facing frontally. In right field PRÓBA
KAZIMIERZ I ODNOWICIEL 1039-1058