This custom-built double-neck (conventional six-string neck in the lower position combined with a four-string bass) weighs just 10.50 lbs. Both necks have a nut width of 1 9/16 inches and a standard Gibson scale length of 24 3/4 inches and both have a quite thick neck profile. Solid mahogany body with bevelled edge (16 1/2 inches wide and 1 3/8 inches deep), two one-piece mahogany necks, and bound rosewood fretboards. The conventional guitar and the twelve-string necks have 20 jumbo frets and inlaid pearl split-parallelogram position markers. Each headstock with "Gibson" logo inlaid in pearl and two-layer (black on white) truss-rod covers with "Custom" engraved in white. Serial number ("849036") impressed into the back of the headstock of the Twelve-String guitar. Individual Kluson Deluxe 'double-line' tuners with double-ring Keystone plastic buttons and "D-169400 / Patent No." stamped on the undrside. Four "patent-number" humbucker pickups. Each pickup with a black label ("Patent No. 2,737,842") on the underside and with outputs of 7.40k and 7.53k on the six-string guitar and outputs of 7.49k and 8.61k on the twelve-string guitar. Black plastic pickup rings. The pots are dated "137 66XX" (CTS 1966). Two five-layer(black / white / black / white / black) plastic pickguards with bevelled edges, the one on the six-string guitar side with seven screws, the one in the middle with eight screws. Each of the pickguards engraved in white with 'Humming Birds and Flowers'. Four controls (one volume and one tone for the two pickups of the conventional guitar and one volume and one tone for the the two pickups on the twelve-string guitar) plus a three-way pickup selector switch for both of the necks in the center of the guitar and a three-way neck selector switch on the treble horn of the pickguard of the conventional guitar. Gold plastic bell-shaped with metal top knobs. Each guitar with Gibson "patent-number" Tune-O-Matic retainer bridge, both with nylon saddles. Maestro vibrato tailpiece with 'Walrus Tooth' arm and three screws on the six-string guitar and a non-adjustable bar tailpiece with three screws on the twelve string guitar. The original strap buttons are positioned on the heel of the twelve-string guitar and on the lower edge. This guitar is in exceptionally fine (9.00) condition. When we took the guitar apart we noticed that under the Maestro Vibrato tailpiece there were three additional screw holes where it is evident that this custom built guitar had been pre-drilled for the standard non adjustable bar tailpiece usually found on EDS-1275's. We have absolutely no doubt that the Maestro Vibrato was fitted at the time of production in 1966. There is a miniscule amount of belt buckle wear on the back (nothing through to the wood and also a mark on the back where the guitar has probably sat for an extended period on a guitar strap in the case. There is some fine checking on the top and a few small and insignificant surface marks on the edges. With all that said, this great rarity - the first mid-sixties EDS-1275 that we have ever seen, is in exceptionally fine (9.00) condition. Housed in the original Gibson black rectangular hardshell case with yellow/orange plush lining (9.00). This guitar at 10.50 pounds is considerably lighter that the three other EDS-1275's that we have handled (1958: 11.80 lbs; 1975: 12.60 lbs; 1975 11.20 lbs).