A fairly rare model - 66 were made (1935 and 1941), with only 6 made in 1938 - with Martin's first full 16 inch body, carved top, f-holes, slightly curved back out of Brazilian rosewood. At the time it was their most expensive model. The musical tastes had been changing dramatically towards the swing band era, and the company felt the need to develop a model in that direction, trying to compete with Gibson's full line of arch-tops. It's one battle that Gibson won, because Martin's models just didn't have the right band sound. This particular example, however does other stuff: it's a unique and interesting finger-style guitar and early enough to still have the wider OM string spacing. And, it's beautiful. The back & sides are shiny, which means it was either oversprayed, refinished, or just polished a lot over the years - the old, fully hardened finishes can get to a gloss that's even glossier than a new one. There's some finish crazing, no cracks, and a particularly nice touch that I've always liked, a tortoiseshell peghead veneer.