A RARE 50p coin has sold for a whopping £4,500 due to a unique mistake.
The Gibraltar 50p was sold to a private collector after The Britannia Coin Company had the coin authenticated by The Numismatic Guarantee Company.
Not known, clear with picture deskQueen Elizabeth II features on the coin which has been sold for more than £4k[/caption] Not known, clear with picture deskThe rear face of the valuable coin is Christmas themed[/caption] The Britannia Coin CompanyChristopher...