It forms part of a wider design that also includes 1p, 2p, 5p ... are particularly special, because they were never intended for general circulation.” In his video, the coin collector explained ...

Here is a 1p coin. Two of these coins are worth the same as a 2p coin. Here is a 5p coin. A 5p coin is worth the same as five 1p coins. Two 5p coins are worth the same as a 10p coin. Two 10p coins ...