20 Zlotys 20th Anniversary of People`s Republic of Poland,Trial Strike CuNi
€161,004.00
| Issuer | Poland |
| Year | 1964 |
| Type | Pattern |
| Value | 20 Zlotys (20 Złotych) (20 PLZ) |
| Currency | Third Zloty (1949-1994) |
| Composition | Copper-nickel |
| Weight | 14.1 g |
| Dimensions | 33 mm |
| Thickness | |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | Wacław Kowalik |
| In circulation to | |
| Reference(s) | KM#Pr116, Fischer Po#P132b, ParM#P290b |