One detail to look at is the lowest rim on George's crown. There are four delicate little diamond shape details in there that are preserved in higher grade coins of this period. That rim is meant to represent a layer of ermine fur and the diamonds are little patterns in it.
Anyway, if you can see them then you're into AU territory which might be plausible given the lustre that I feel like I'm seeing. On the other hand, the obverse seems to have a little of tiny dings that would seem to represent more heavy circulation in which case you're probably in EF range.