The Advanced Jumbo of the mid 1930s was one of Gibson's best models, designed to be their Martin D-28 killer: Gibson generally stayed away from rosewood, and almost never used Martin's long scale. This one is from a limited edition of 75 guitars, with Adirondack spruce, Indian rosewood, hide glue bracing and L.R. Baggs' electronics. To my ears, it has a much nicer tone than the standard Gibsons of the period, lots of deep power and fat notes. The C shape neck has a bit of girth, not super thin but nicely shaped, a joy to play.