2009 Bi-Metal Planchet Australian One Dollar
Australian wrong-planchet errors are rare with only a handful of different instances known. One such instance is a 2009 mob of roos $1 struck on a bi-metal planchet, which just a single example known.
The bi-metal planchet on which the 2009 mob of roos $1 was struck has a gold-coloured outer rim with a silver-coloured core. Tellingly, the rim has edge lettering BCV 1 - the same edge lettering used on the coins of Venezuela (BCV stands for Banco Central de Venezuela i.e. The Central Bank of Venezuela). In this case the bi-metal planchet was intended for a Venezuelan 1 Bolivar coin but was accidentally shipped to Australia along with normal $1 planchets for striking.