From https://www.prsguitars.com/csc/models.html
EG BOLT-ON SERIES I: 1990 – 1991. New squarer shape. Alder body, maple neck, 22-fret rosewood fretboard. EG3 s/s/s and EG4 s/s/h, scratchplate mounted pickups. Volume, twin tones, 5-way selector, PRS tremolo, Schaller non-locking tuners.
EG...