Most Probably the Only One Ever Made…

This custom-built double-neck (conventional six-string neck in the lower position combined with an eight-string mandolin neck) weighs just 9.50 lbs. Solid mahogany body with beveled edge (16 1/2 inches wide and 1 3/8 inches deep), two one-piece mahogany necks, and bound rosewood fretboards. The conventional guitar neck with 20 jumbo frets and inlaid pearl split-parallelogram position markers; the mandolin neck with 24 thin frets and inlaid pearl dot position markers. Three patent-number humbucker pickups with outputs of 7.55k and 7.61k on the conventional guitar and an output of 7.66k on the mandolin. Two five-layer plastic pickguards with bevelled edges, each with six screws. Four controls, one volume and one tone for the conventional guitar and one volume and one tone for the mandolin, plus a three-way pickup selector switch for the conventional guitar in the center of the body and a three-way neck selector switch on the treble horn of the pickguard of the conventional guitar. The conventional guitar with  a Gibson ABR-1 Tune-O-Matic retainer bridge with metal saddles, the Mandolin with an ebony 'bar' bridge. The mahogany sunburst finish is as new without a hint of any fading. There are a few tiny surface marks on the lower edge of the body and one tiny surface chip on the upper edge, otherwise this incredibly rare instrument is in is in mint as new (9.50) condition. Housed in the original Gibson black rectangular hardshell case with orange plush lining (9.25). The original receipt dated "10-5-71" is included.