A very rare variety of the second and final vintage of brass gold coins.
An issue distinguished by the SAMPLE inscription placed low, instead of at the top, above the wreath.
In Janusz Parchimowicz's catalog "Polish Proof Coins 1949-1990," only one of the eight inscription variants had the inscription low.
Mintage of 100 pieces (for all variants)
Brass, diameter 25 mm, weight 6.72 g