An Australia - Sydney Mint 1856 Sovereign, uncirculated and in absolute mint condition could fetch up to $135,000 AUD. If it has been circulated but still in good condition, it might fetch anything from $2,500 to $18,500 AUD.
An Australia - Sydney Mint 1856 Sovereign (Proof), uncirculated and in absolute mint condition could fetch up to $400,000 AUD. There is only one known to exist.
A reputable coin dealer will be able to give a more accurate valuation.
Australia does not produce any Sovereign coins.
The Australian Ten Shilling note had "Half Sovereign" printed on them from 1915 to 1933. To get a valuation, please provide the serial number and the names of the two signatories.
With the possible exception of traders tokens (with the traders business name on them), there were no "Australian" halfpennies minted prior to 1911.
With the possible exception of traders tokens (with the traders business name on them), there were no "Australian" pennies minted prior to 1911.
The only "Australian" Sovereigns were minted at the Sydney Mint between 1853 and 1870. These have "SYDNEY MINNT" and "AUSTRALIA" clearly inscribed on the reverse. Any other Sovereign circulating in Australia would have been a British Sovereign minted to the British pattern. These may have been minted in either the London, Melbourne, Perth or Sydney Mints.
We have an Australian flag to represent the country, like every other sovereign nation.
A Sovereign has a face value of One Pound (GBP). In today's currency, a quarter of a Sovereign would be 25 Pence.
Other than British gold coins such as the Half-Sovereign, Sovereign, etc., Australia has never produced "Australian" gold coins for general circulation in Australia. The Sovereign coinage minted for Britain were minted to the British pattern from gold mined in Australia and were minted at either of the Melbourne, Perth or Sydney Mints (Mintmarks M, P or S respectively).
William Dick - Australian politician - was born in 1865.
Michael O'Connor - Australian politician - was born in 1865.
There were no 1981 British Half-Sovereign minted.
The Sovereign is a coin, not a value. It does not have a symbol. The value of the Sovereign is One Pound. In the pre-decimal currency, it was also equal to One Pound (or 20 Shillings).