Is your small change be worth a fortune? The £70 Kew Gardens 50p and other valuable coins
 

http://img-s-msn-com.akamaized.net/t...6&q=60&o=f&l=fA rare 50p piece featuring Kew Gardens has been changing hands for £70, while some Beatrix Potter 50ps are worth hundreds - but they're not the only coins worth a lot of cash

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