1921 50¢ PCGS SP-64. The King of Canadian Coins! In 1929, the master of the Canadian Mint decided to melt the entire stock of 1920 and 1921 pieces. Believed to have less than 75 pieces on the market in all grades combined. This is a true Canadian rarity. The surfaces display even, attractive and intense original gray toning, with basically almost no contact marks. Expect spirited bidding! A VG-8 example has been sold recently and brought 50,000+.