The British One Pound coin is round.
There is a one pound coin and a two pound coin but not a three pound coin.
Currently, British general circulation currency comes in the following denominations - 1 Penny coin 2 Pence coin 5 Pence coin 10 Pence coin 20 Pence coin 50 Pence coin 1 Pound coin 2 Pound coin 5 Pound note 10 Pound note 20 Pound note 50 Pound note
The 1983 One Pound coin was the year of first issue for the British One Pound coin which replaced the One Pound note. The British One Pound coin is legal tender anywhere in the United Kingdom and some of its dependencies.
Such a coin does not exist. The British One Pound coin was first issued in 1983.
British Pound denominations currently in circulation include - One Pound coin Two Pound coin Five Pound coin (legal tender and often found in circulation) Five Pound note Ten Pound note Twenty Pound note Fifty Pound note
The British One Pound coin, as distinct from the "Sovereign" coin, was introduced in 1983 to replace the Bank of England One Pound note. See the link below.
Swallowing a pound coin could be serious, probably unlike this question.
Please check your coin. You possibly refer to the 1986 commemorative Two Pound coin.
There has been a British Five Pound coin on and off since 1817. The British decimal Five Pound gold bullion coin was first issued in 1980 and the Five Pound "Crown" coin was first issued in 1990. The current British Five Pound "Crown" coin is intended to be a non-circulating legal tender commemorative coin. The Royal Mint has no current plans to produce a general circulation Five Pound coin in the foreseeable future.
A pound coin is 2.25 cm in diameter and 3.15mm thick. Therefore the volume of a pound coin is 1252.5 cubic millimetres or approx. 1.25 cubic centimetres.
There was no 1977 British One Pound coin minted. The first general circulation One Pound coins was minted in 1983.
Such a coin does not exist. The English have never produced a 4 Pound coin.