I have a 20yr old Takamine, not even a particularly good guitar but it does have some sentimental value. It has a black glossy finish that has turned a weird cloudy haze over the years. Anything I can do about that? It's strange because it's still shiny and glossy but the black looks more grey-ish, almost like what would happen if you painted over it with elmer's glue, that sort of opaque milky color.

I'm not really concerned about making it look new, just wondering what options there are. Maybe I should relic it, ha!