A beautiful piece of a very rare technological sample of the communist era.
Prized type - small Kosciuszko (28 instead of 31 mm) - in metal appropriate for circulation coins - cupronickel.
Mintage of 27 pieces (NBP).
PRÓBA inscription convex, in front of the head.
Variant with the mint mark slightly skewed.
Copper-nickel, diameter 28 mm, weight 9.30 g.
