This is a 2017 National ResoPhonic Tricone, with Brass Body finished in Antique Brass.
The brass body is plated and then given an aged patina, resulting in a unique vintage look. Each instrument is individually finished by hand so no two instruments look alike, making each one a unique work of art. See attached pics of Specs sheet and product description literature.
Originally purchased last year from Artisan Guitars; one-owner.
Mint with OHSC.