Australia 2010 50 Cent Upset Error

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Coin Type:Australia 50 Cent
Grade:EF
Year:2010
Mint:Royal Australian Mint
Metal:Cupro-Nickel
Obverse:Queen Elizabeth II (Ian Rank-Broadley)
Reverse:Coat of Arms (Stuart Devlin)

Some of the 2010 50 cent coins were minted with the obverse and reverse die rotated 30 degrees or one face of the dodecagonal shaped planchet. Presumably this was in error. Quite a difficult error to find.

Supplied in an archival Saflip.