1934 National Style O Resonator,
Nickel on Brass,
as made famous by Mark Knopfler
OK, his is a 1937, with flat headstock and 14-fret neck. Three years earlier, and these came with open headstock and 12-fret neck. But for that look, that sound, and the experience of playing an absolute icon, this one's hard to beat. A nickel on brass classic!