COINING IT Rare Olympics 50p coin sells for 21 times its face value on eBay – have you checked your change? A RARE 50p coin featuring the offside rule from the London 2012 Olympics has sold for over 21 times its face value in a recent eBay auction. Another Olympic 50p, this time featuring the wrestling design, went for £19 in a recent auction, nearly 40 times its face value. A Peter Rabbit 50p from the Beatrix Potter series sold for £11 after a flurry of bids. One Royal Mint coin featuring a printing mistake – a misaligned image – was bought for £50, despite being a standard 50p coin in shape and size.