Martin 2018 Custom Shop M14 Sinker Mahogany Back And Sides/Adirondack Spruce Top With OHSC - UsedIn the spring of 2018, Russo Music worked with the Martin Custom Shop to design six acoustic instruments from the ground up. The M 14 body style can be best described as having the length of a dreadnought with the depth of a 000. This particular Martin M 14 features an Adirondack Spruce top, Sinker Mahogany back and sides, and Madagascar Rosewood body binding. The Sinker Mahogany used for this guitar comes from a sourced batch having aged 200 years