John Mayer’s Martin OM28-V
By 2002 Mayer seems to have decided to start moving from a dreadnought sized guitars to OM/000 sized ones. For the first guitar, the choice fell on an OM28-V model, which is part of Martin’s Vintage Series line. This guitar was mostly seen just during the 2002 tour, and by 2003 it was replaced by Mayer’s own signature model.
Martin OM28-V features a solid Sitka spruce top with solid East Indian rosewood back and sides, solid mahogany neck with ebony fretboard, tortoise pickguard, and Gotoh nickel tuners.