ok, here's some more detail picture.
beautiful 4 ply nut
marked below this knob is Japan
original tuners same as Univox, Guyatone, etc..
truss rod nut at the back of the neck
string tree/string retainer
quite rusty electrical part
so far, i can't open the pickup because the rusty screw.
VintAxe, Knight Guitars confirmed that they don't make custom Mosrite style guitar.