The 1982 Belgian 20 Francs coin features King Baudouin I on the obverse and the Belgian coat of arms on the reverse. This is a gold coin with a weight of 6.451 grams and a 900 fineness (90% pure gold). It is part of the KM 159 series, which ran from 1980 to 1993, and was minted by the Royal Mint of Belgium.