1921 King George V 5 Cents. In 1921, Canadian legislation called for a change in the size and metal used for the 5-cent piece. ... To tell if a Canadian coin is rare, check for low mintage years, ...

These coins have stalks of wheat encircling the "One Cent" text on the back of the coin. The wheat was eventually phased out and replaced with an engraving of the Lincoln Memorial, USA TODAY reported.