I just checked all 6 of my FFG Delica 4s, and they are all smooth, except for the orange one (which looks just like yours). As others have said, nothing to worry about.
The marks could be from grinding but I suspect they come from laser cutting. If you look closely you can see lines in many Spyderholes from the laser process that cut them out of the blank.
These marks are not from the lasering process; those are allways pependacular to the surface, and not exactly even. Check the Salt series for good examples (blade, hole), and the liners of the models with recessed liners, like the Para, Milli and Manix2.
I think those mars are from the contour milling process.
My black Delica has those same marks, but I didn't notice them until I read this post and checked. Interestingly, my Dragonfly Salt, which has jimping in that area, has no grooves like the Delica. Maybe knives with jimping have better finishes in that area?
