 The changeover period started on 31 July 2006, with the old coins usable up until 31 October 2006.The older 50, 20, 10 and 5c pieces are no longer legal tender, but are still redeemable at the Reserve Bank.In August 2005, the Royal Canadian Mint, which has minted Canadian coins in plated steel in the past, was selected by the Reserve Bank to make the new coins.