I strongly suspect this damage to have been caused by headstock tuners. In this video I show you why I believe that and how to both apply and where to get your own replacement headstock decals. I'm not including the link here becuase there is no sponsership between them and me. Watch the video closely and you'll see where to get one, or just google it like I did:-)**I AM NOT IN ANY WAY BLAMING ANY ONE MANUFACTURER OF HEADSTOCK TUNER** This is just what I own and what is most popular. It's used as a PROP to demonstrate my point.