It's a fairly weak strike, which mimics wear a bit. (Note the very weak rachis on the second feather. Even on a G-04, it should be more complete.) The reverse peripheral detail is decent, but the central device details are also quite weak, even for grade. Overall, it's on the G-04/G-06 bubble.
I agree with a details designation because of the obverse scratches.
I'm just not sure on the RPM. I can see it as a possibility, but I can also see things that make me pause.