Definitely fake. A most likely chinese counterfeit looks like a perhaps cast coin. At least it wasn't as high quality as fakes struck from dies created by electrolysis? from genuine coins these are the ones to be aware of. Anyway there are a number of reasons that I found particularly the coat is not completed as seen that it comes quite short of the rim and the lack of detail cannot be justified by the wear after looking at other Very Fine coins which had just as much wear but significantly more detail. Also the weakness on the striking of the rider's hand is a notorious indicator of a fake while the weak details on the horse and king's cloak also supports it being fake.
Lastly these coins had a value of two shillings but were sold for three shillings to support the celebrations making low grade examples much much scarcer than high grade examples as people set them aside as a shilling was worth quite a bit back then