I liked this one and figured it would be interesting to guess the grade. Let's see what everyone thinks.
I like the textile look to the toning. I am on the fence with the toning. Quarters have been known to go wild colors. There are a few superficial scratches/marks that I think got the pass. 67+, I think that it is market acceptable.
Nice coin with some great toning. Is that some sort of mint damage/error on the reverse at 6 o'clock, or is it an optical/photographic illusion? Looks like there's some deformity there.
Could be a slightly tapered planchet. I agree the only other thing I can think of is a dip, the area in question is definitely at terminal stage, a quick dip could have removed a bunch of heavily tarnished surface.