A two pence piece that was accidentally made in the wrong metal is set to sell for 50,000 times its face value.

The coin was struck in cupronickel, the blend of copper and nickel formerly used for 10p and 5p coins, when it should have been bronze.

The errant coin, thought to be unique, was discovered in 1988, by the owner of a petrol station in a roll of new coins.

It is thought that a cupronickel blank had been left in the barrel during the minting process by mistake.

Richard Brommell, from Charterhouse Auctions, believes the coin could fetch up to £1,000 when it is auctioned in Sherborne, Dorset, on Friday.

He said: 'It's a conversation piece and a curio. The Royal Mint can produce the odd anomaly but this takes the biscuit. It's a very difficult thing to value because there are no comparables.

To read the complete article, see:The silver-coloured 2p freak coin that was accidentally made in the wrong metal is set to sell for £1,000 at auction(www.dailymail.co.uk/news/article-2706918/The-silver-coloured-2p-freak-coin-accidentally-wrong-metal-set-sell-1-000-auction.html)

To read the complete article, see:World's only silver 2p piece sells for £1,357: Rare coin former petrol station owner found among change in 1988 sells for 67,850 times its face value(www.dailymail.co.uk/news/article-2715045/World-s-silver-2p-piece-sells-1-357-Rare-coin-former-petrol-station-owner-change-1988-sells-67-850-times-value.html)