Dean Exotica 10-string Cittern / Octave Mandolin conversion Excellent Acoustic Electric | Reverb
Baxendale '50s Kay L3113 Octave Mandolin Conversion – Telluride Music Co.
Converting To An Octave Mandolin. Maybe. | Fender Stratocaster Guitar Forum
1990s/2019 Lotus 5-String Electric Octave Mandolin Conversion
Octave Mandolin conversion Quilt Top - choice of colors (Color: Green, Tuning (low to high) for your application: GDAE unison (octave mandolin))
Mustang Octave Mandolin conversion (made to order) with color and tuning options (Color: Green, Tuning (low to high) for your application: GDAD unison (Irish bouzouki))
MORTone Electric Octave mandolin mini strat conversion - Black | eBay