The Royal Australian Mint has released a special addition 50 cent coin to mark the 40th anniversary of the moon landing. This year also marks 40 years since the current 50 cent piece was released.

A rare round 50 cent coin (pictured) was only made between February 14, 1966 and March 1968. It is now worth $15 due to it's high silver content But some were accidentally made with the standard ...