Most all bowed instruments (violin, cello, etc.) have an unfinished neck. You treat the neck a few times a year with tung or linseed oil, let it sit overnight, then buff out. It leaves a very smooth satin finish. I did the same thing to my mandolins and octave mando and love the result there. Bluegrass players call this a "speed neck" and to me it works better than a glossy finish that can sometimes stick to sweaty hands. Anyway, I've never seen this on a guitar. Obviously removing the finish on the neck will affect the guitar's value no matter how well the player likes the result. Anyone ever do this to their guitar? My Altamira gets nervous when I pull out the 0000 steel wool and ultra fine sandpaper.....Don't try to oil anything that has some other type of finish on it, you'll end up with a gummy mess.