Pattern 50 Zlotych 1983 MW SW "John III Sobieski". Copper-Nickel (Poland, Peoples Republic)

Where can I sell the Pattern 50 Zlotych 1983 "John III Sobieski" with the letters MW SW, Copper-Nickel?

To sell the Pattern 50 Zlotych 1983 "John III Sobieski" with the letters MW SW, Copper-Nickel we recommend contacting specialized numismatic companies that hold regular auction sales. Public auctions are the most fair and secure way to sell valuable collectible coins. Go to the list of companies to find a suitable platform.