Superior Guitar Works studio located just outside of Philadelphia, Pa. (Fort Washington, Pa.) performs complete fret repair, guitar repair, fret restoration, and guitar restoration services on all vintage fretted instruments including vintage guitars. Below is an overview of our services. Our luthier expertise is repairing vintage guitars to original factory look, repairing and restoring and retaining the patina of the instrument or restoring to museum quality all vintage guitars (acoustic, bass & electric) and other vintage fretted instruments.