ibanez doubleneck

Ibanez made a few of this back in '99. Any one know how much these guitars might be worth ? This was a blurb.. July 24, 1999 - Along with two brand new 7-strings, Ibanez is also showing a very Limited Edition 6/7 Double Neck at the Nashville NAMM show, that is the Ibanez STW 6/7 Doubleneck...