exceptionally fine vintage condition. The sound and playability are quite remarkable.

　　In prewar catalogs the selling point was that the "Gibson 1915 would do to the six-string guitar what the piano did to the harpsichord" an ideal instrument to fill out the sound of the mandolin orchestra of its time!

　　Features:

　　A rack of 10 extra bass strings tuned chromatically to provide rich, open-string bass note strings plucked by the thumb

　　thumb and tuned chromatically from A-sharp to G-sharp,

　　The top six strings are over the fretboard and those chords are played as on a conventional guitar.

　　Black and red mahogany finish and has 50s Gibson tuners on the guitar neck.

　　Recently purchased at an estate sale in San Francisco.