The Kew Gardens 50p coin is believed to be one of the rarest of its kind.And earlier this month one of them sold for £281, which is 300 times its value, after a bidding war online.They are popular among coin collectors because only 210,000 were minted.The Royal Mint says it is one of top 10 rarest coins in circulation.And another Kew Gardens 50p coin was sold for £161.55 earlier this month after being listed for just 99p.It was sold within seven days of being listed after 34 bids came in. Around 2.2 million Blue Peter coins were minted in 2011 and released into circulation.But a different version was made two years earlier and they are much more valuable.Earlier this month one of the coins racked up 13 bids on eBay before selling for an.
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