The 1967 two cent 'mule'
Summary
Kiwis eager to check out New Zealand's decimal coins got a rude shock when the first two cent pieces spilled into their hands on 10 July 1967.
A fair number of these coins – worth 34 cents in 2014 money – were mis-stamped with the New Zealand reverse ('tail'), and the Bahama Islands five cent obverse ('head'). Such mis-stamped coins are known to collectors as 'mules' because of the way they mix different currencies.