http://www.frettedamericana.com/details.php?id=917&counter=0
This custom-built double-neck (conventional six-string neck in the lower position combined with a twelve-string neck weighs just 10.50 lbs. Both necks are one-piece mahogany and have a nut width of 1 9/16 inches and a medium-to-thick profile. 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. One of just 4 guitars built in 1966. Housed in the original Gibson black rectangular hardshell case with yellow/orange plush lining (9.00). A great rarity