An extremely rare technological sample of the communist period.
A 1957 gold issue on a NEU SILBER "NEW SILVER" alloy disc.
Item extremely rare on the auction market, only two quotations known.
Mintage unknown, according to the NBP docket 1 piece, previously reported 5 pieces.
Coin without inscription PRÓBA, serrated edge.
NEW SILVER, diameter 25 mm, weight 6.83 g.
