Such a coin does not exist.
The Royal Australian Mint has never produced a Two Pence coin.
Value of an 2004 2 pence coin magnetic
Australia has never produced a coin valued at 8 anything (Pounds, Shillings, Pence, Dollars or cents).
The "face value" of a coin is whatever is inscribed on it, hence the term "face value". The face value of a 10 Pence coin is 10 Pence.
The value of the copper in a 2 Pence coin would be significantly less then 10% of the face value of the coin at the time the coin was minted. Today, it might be a little more, about 0.2 Pence.
There was no 1974 British 25 Pence coin minted.
Such a coin does not exist. The 10 pence coin was first issued in 1968.
There was no 1978 British 25 Pence coin minted.
Such a coin does not exist. The Irish 10 Pence coin was first issued in 1969.
Such a coin does not exist. The British 50 Pence coin was first issued in 1969.
The British 20 Pence coin was first released in 1982.
There were no British 1975 25 Pence coins issued.
The value of a 2001 Australian fifty pence coin typically depends on its condition and demand among collectors. As of now, it generally ranges from its face value of 50 cents to a few dollars for uncirculated or collectible versions. Coins with unique features or errors may fetch higher prices. For an accurate assessment, checking with a coin dealer or a reliable numismatic resource is recommended.