Originally invented by National Guitars owner John Dopyera in 1927 as a guitar with more volume and projection, the resonating Tricone design was groundbreaking. Exactly like the originals, National Reso-Phonic utilize a brass body and coverplate that are nickel plated and polished to a mirror-like shine. The guitar also features a slotted headstock topped by the famed National shield decal and a mahogany neck with an ivoroid-bound ebony fingerboard. An early National advertisement in 1927 touted the Triconeäó»s tone, power, and quality of sound, and this reissue example from 2013 certainly carries on that tradition. The Style I is in excellent condition with its original hard case.