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A British Sixpence in 1805 has the purchasing power of about £1.40 GBP today.
The British Sixpence was known as a "Tanner".
The Australian Sixpence was known as a "Zack".
It will probably say "sixpence" on it.... just guessing...
Collin Sixpence was born in 1974.
Half a Sixpence was created in 1963.