"This coin features a significant minting error, with a lamination flaw covering nearly 40% of the obverse side. Such errors are extremely rare, and this may be the only known example of this type on the 2011 Sailing london Olympics 50p coin." A one of a kind super rare London Olympics 'SAILING' coin with a rare lamination error on the obverse like this coin is extremely rare. The coin is a commemorative piece for the 2012 London Olympics. It is a circulated coin and a sought-after collectors' item.