Martin 000-18 Standard Series Auditorium Acoustic Guitar.

Martin 000-18.  New Y25 model

Martin 000-18 Standard Series Auditorium Acoustic Guitar. The 000-18 has solid mahogany back and sides, Sitka spruce top, polished gloss finish and a hand-fit dovetail neck joint, producing a slightly brighter tone than its East Indian rosewood counterpart, the 000-28.