Today I was at my grandparents' house and found a really old guitar. It's kinda small (I don't know why), but it also has 7 strings. Another strange thing for me which I have never seen - the nut is wooden and it's not detachable, like modern ones have (so it's part of the head itself).
The tuning pegs are really hard to rotate; I think that's because the strings are very old. The body itself has some scratches, which I like, because it looks really old and vintage. The guitar also has some sort of strange truss rod, you can rotate it from the back of the fretboard where it meets the body, and I don't know why but it feels very dirty and sticky.
Main problems are tuning pegs, strings, and it needs little bit of truss adjustment.
The guitar is old (it has a date, 12 mar 1955) and I'm scared to do anything because I think that it could break.
What would you recommend?