Yes, that's a nice scan, nicely focussed detail, so well done. (y)
Did you mesh it from the point cloud .asc files or use the auto align function in the software?
I found the optical distance from scanner to surface is around 430mm to get a clean focus on the black & white unphase lines, and I think it helps if you don't deviate too much from the previous scan.
I made a mistake on my first free scans by having the scanner too far away from the object, and I'm sure it decreased the surface resolution, and I noticed surface artefacts too. Anybody else have a recommended distance?
57 scans seems a lot, as 8 is for the typical turntable scan, but moving the camera higher and lower is more beneficial to get easier alignment, than doing the equivalent of one planar rotation, then flipping the object. It definitely seems to work better moving the scanner around.