I'm finding it difficult to calculate this coin's value, because it's got some erosion (from water?) on the obverse and haymarking on the reverse. The reverse is high grade. I'd conservatively grade it about extremely fine, considering the weak strikes common in this series.
My catalogue (four years out of date), give F as £50, VF £225 and EF £650. My personal feeling is that it's going to be somewhere between the F and VF price, but I'm unsure. I'd like some second opinions. It's attractive despite the damage.