Australia 1966 One 1 Cent Coin. Error. Wrong Planchet?

Maybe mixed with Israel Ten Argot at the same time.

Australia was making coins for alot of other countries, including New Zealand,

Israel, Fiji, Thailand, Nepal, Samoa and Tonga in that period as they do today

and some where the same size as this sample. You may have a different opinion,

but search the coins first