Martin Sigma GCR-7 Grand Concert 000 Acoustic Electric Guitar '74

SIGMA Acoustic Guitars

1974 Martin Sigma GCS-6 00-18 Copy Natural > Guitars Acoustic

1970-1979 Martin Sigma GCR-7 (Grand Concert Rosewood Grade 7). Beautiful guitar that sounds amazing. Rare guitar made in Japan. Well kept overtime.

Sigma GCR-7 1970-1979

VINTAGE 1970 ACOUSTIC MARTIN SIGMA GUITAR RARE GCS-7 / GCR-7 ZERO

Martin CEO-7 00 Grand Concert Acoustic Guitar Sunburst

1974 Martin Sigma GCS-6 00-18 Copy Natural > Guitars Acoustic

Martin Sigma GCR-7 Grand Concert 000 Acoustic Electric Guitar '74

Martin CEO-7 00 Grand Concert Acoustic Guitar Sunburst

SIGMA Acoustic Guitars

Sigma Guitars

SIGMA 41” Acoustic Guitar, Dreadnought, 4/4 Full-Size

Sigma GCR-7 Grand Concert natural MIJ -75 serial 11724, beg

Sigma Right-Handed Acoustic Guitars

SIGMA 41” Acoustic Guitar, Dreadnought, 4/4 Full-Size