The coins have been dubbed the 'holy grail' of change collecting and if you find one it could be worth a lot more than 20p ...
An unusual coin could net its owner over 250 times its face value after an error when it was made. The rare 20p coin was one of an unknown number released by the Royal Mint without a date.
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GOBankingRates on MSN4 Rare Coins From the ’80s That Only Coin Collectors Know AboutThese four rare 1980s coins could be hiding in your change -- and they might be worth hundreds or even thousands to ...
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LancsLive on MSNRare British coin 'worth £72,000' with 'no record' of how many there areThese particular coins, among others, were often put beneath building foundation stones, following an old custom ...
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