Yeah, I have one of those National Resophonic Delphi guitars (I elaborated a little about it earlier in this thread). Anyway, it's modeled loosly after a triolian. The new National Resophonic folks in San Luis Obispo CA are making these in round neck only. Single resonator. Biscuit bridge. The newest ones have adjustable truss rods (mine's a 1994, and truss rod is not adjustable).

I'm off for a few days of camping. Be back later. Take care, all.

Mark