In this particular year, industrial action at the Royal Australian Mint saw Australia once again seek the assistance of mints overseas, with Britain’s Royal Mint and the Royal Canadian Mint called into action.  While mintage figures from both overseas mints are similar, it is the coins struck at the Royal Canadian Mint that prove most popular with collectors. The Royal Canadian Mint 1981 20c can be distinguished by examining the claws on the left paw of the platypus, located directly under the 2 in the denomination. All other coins from 1981 have 4 claws on the left paw, but coins struck at the Canadian mint have a claw on the far right that appears to be half missing! This distinctive type is consequently known as the ‘Three & a Half Claws’ variety.