An error which took place when the coins were produced means that this 20p is in high demand with collectors across the UK.
An error which took place when the coins were produced means that this 20p is in high demand with collectors across the UK.
According to International Precious Metals, only 2,000 were produced, and even fewer are known to exist today—hence their hefty worth. One of these coins once fetched $6.6 million at auction, while ...