This 2011 WWF 50p Decimal Coin features a weak off-centre stamp error, making it a unique addition to any coin collection. 

The coin is classified under the categories of 50p and Decimal Coinage, and is a must-have for British coin enthusiasts. 

 The coin's denomination is 50p, and it is a part of the British coin series. 

It is perfect for collectors who are looking for an exceptional piece to add to their collection. 

Get your hands on this rare and fascinating coin today!