State Emblem of People's Republic of Poland - crownless eagle with head turned left and outstretched wings, flanked by year 19-76. Mintmark under talons.
Around POLSKA RZECZPOSPOLITA LUDOWA, below Zl 500 Zl
Description reverse
Effigy of Tadeusz Kosciuszko facing right.
In front semicircular legend TADEUSZ KOŚCIUSZKO 1746-1817