Here is a coin known only from proof prints. An uncirculated twenty-dollar coin designed by Jarnuszkiewicz and Barcicka commemorating the key industrial investments of the 1960s (Nowa Huta, the refinery in Plock and the Turoszów power plant).
Realized only in the form of nickel samples and very rare technological samples made in cupronickel, such as this one.
Mintage of no more than 22 pieces.
Type with eagle on pedestal (as on nickel samples).
First time in our offer.
Rarity.
Complete with period box.
Copper-nickel, diameter 33 mm, weight 15.22 g.
