I'm in the process of a 'sympathetic restoration ' of a recently acquired bass. I've read a lot about different products that have been used for refinishing, many people pointing out that some lacquers/ varnishes can react with others. I'm not completely stripping the body back, just getting the old finish sanded smooth, filling in dings/ dents etc.
How do I know what was used for the original finish on the bass, so I don't screw up when I attempt to apply the new finish.
The bass in question is a 1977 Greco GOB 1200.
any ideas, and tips are most welcome.