The Offside 50p coin is very scarce. The coin is considered to be the rarest coin of the twenty-nine 2011 Olympic 50p coins that were issued to commemorate the 2012 London Olympics. Let’s take a look at why the average value is so high, as well as other factors that contribute to the value of the Offside 50p. The Offside 50p, introduced as part of the 2011 Olympic 50p coins, is one of the rarest 50p coins you can still find in your change today – but how much is it worth?Īccording to average values in 2022 on eBay, the Offside 50p sells for around £13.60, not including postage and packaging.