Nobody was minting Threepences in 1971. The last general circulation British Threepence was minted in 1967.
Such a coin does not exist.
The British 20 Pence coin was first issued in 1982.
There was no 1974 British 25 Pence coin minted.
A shilling was a coin in British currency until 1971. It's value at decimalisation was 5 new pence.
The British 20 Pence coin was first released in 1982.
Such a coin does not exist. The British 50 Pence coin was first issued in 1969.
There was no 1978 British 25 Pence coin minted.
The first British 20 Pence coin was issued in 1982.
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.
There were no British 1975 25 Pence coins issued.
Such a coin does not exist. The British - 1 New Penny was first issued in 1971 2 New Pence was first issued in 1971 5 New Pence was first issued in 1968 10 New Pence was first issued in 1968 50 New Pence was first issued in 1969
The first British 50 New Pence coin was issued in 1969.
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.
Such a coin does not exist. The British 20 Pence coin was first issued in 1985. They are heptagonal, not round.