Recently acquired this as a 4-string compliment to my Stealth Distillate 5 (pictured). That they both have the tail, the same headstock, and are both long scale sold me on this from when I saw it. The writing on the case says it is Koa, and I could tell by the SN that it was made in 1978. One curiosity is that there is a name, "Walter Johnson" inscribed on the truss rod cover plate.