it is a recently minted coin and a 50p is a fairly large coin if I remember correctly so those 2 factors usually equal a fairly tough error since errors are easier noticed by quality control on larger denominations and since the more modern a coin is, the better the quality control usually is..so i'd assume there is a healthy value and rarity for what it is..the problem is that I am not a G.B. collector and can't accurately tell you or try to inform you on what I don't know..give it a bit of time and you'll surely get some much better help than I could give.
Feel free to call me Will.
Edited by thedollarman
12/11/2016 6:26 pm