Very rare, technological sample of the first twenty-dollar coin with Marceli Nowotko.
Minted in cupronickel in an edition of only 20 pieces.
Made with a different obverse stamp than the nickel issue (smaller eagle), as shown in Janusz Parchimowicz's "Polish Sample Coins 1949-1990" catalog.
Mint, with uneven patina on the surface and mirror.
