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.
Australia does not produce any Sovereign coins.
There were no Australian Florins minted until 1910.
There was no British 1901 Two Pound or Double Sovereign coin produced.
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" Threepences minted prior to 1910.
Please check your coin. Queen Victoria died in 1901 and has not appeared on any Sovereigns coins since then.
Such a coins does not exist. All 1901 British coins featured Queen Victoria on the obverse. George V started appearing on British coins in 1911.
Australian Senate was created in 1901.
Australian Army was created in 1901.
1901
Royal Australian Navy was created in 1901.
The Australian Federation begun on the 1st of January 1901!