Hello, i have an very old acoustic guitar thats laying around for years. This guitar has the best sound of all my guitars. Its old, it needs restoration, factory is unknown. I need to replace the tuners... Plese see images, click on them. My questions are: - what type of guitar is this and what for are people using it? - how to restore cracked paint, lacque...? - back has no paint at all, what to do there?