A very rare, technological sample of the State Mint.
One of two samples complementing the 1949-57 brass samples. Differing in form of execution, as the denominations introduced in 1958 (2 and 5 zloty) were not marked with a concave SAMPLE inscription, and it was placed on the stamp (as a result, it is convex on the coin).
Mintage of 100 pieces.
Spot rust on the eagle's belly and small dots of it on the rim, otherwise beautiful and naturally yellow.
Brass, diameter 27 mm, weight 8.86 g.
