Welcome to the forum.
Here is a bit of info. The guitar is a all laminate guitar, not a solid wood top. Worth $50-60 dollars US
ACOUSTIC: CLASSICAL MODELS (C SERIES)
Student grade models C10, C30, and C50 were produced in the late 1970s and early 1980s, but there is no specific information on these guitars.
C20 - classic style, spruce top, round soundhole, three-stripe bound body, wooden inlay rosette, mahogany back/sides/neck, 12/19-fret rosewood fingerboard, tied rosewood bridge, three-per-side nylon head, chrome tuners, available in Natural finish, mfg. 1994 only.
Grading 100% Excellent Average
N/A $70 - 100 $40 - 60
Last MSR was $180.