One of the rarest is the Kew’s Garden 50p, which was designed to mark the 250th anniversary of the gardens in 2009. Only 210,000 coins were ever minted with this design. The Kew Gardens 50p sells for ...

An expert reckons it's worth "looking out for" a unique British coin that's worth a small fortune ... "£200,000 for this old penny. This is a UK Penny from 1952. This intriguing proof coin is the ...