I would say around MS64 RB. It does have nice luster and clear fields, so I'm guessing it's in the mid MS range.
The scratch is not wear and will not keep it from being an uncirculated coin. However, if the scratch is severe enough, it would make the coin a problem coin in which case the TPG grade would be UNC Details--Scratched. Personally, I think the scratch is right on the edge of severity and I think the coin would net grade to MS62 RB.
The scratch is too deep. You can see the copper shining underneath the scratch. It's not a minor scratch or bag mark. I thought perhaps the photo was taken through a holder and that's where the scratch is but it doesn't seem to be the case.
Not really sure of a number grade, but I would only buy it at AU pricing. The coin just seems off to me. Matt