The fakes always have the tuners go along the lines as opposed to straight…
Or the inlay is too short or long fat…
Looks perfect to me but there are people on the site who know way more than I do…
It could also be a real neck and fake body…
Got to see more pics
There is nothing wrong with that headstock and serial is ok. Custom shop black customs are using the white mark. Nothing wrong. Headstock inlays also are showing typical original Gibson features...
The headstock seems to be alright. More pics of the guitar, especially the bridge area, cut away, and fret board would help to make a better judgment call.
The tuners are all properly in line and the strings are resting appropriately half in/half on the nut slots. Fakes quite often have problems in these areas and, as said, the headstock looks good.