Martin Limited Edition D-12 Dreadnought, Sitka Spruce Top, Sapele Back And SidesFrom the Road Series line of guitars, this D 12 is part of a limited run from Martin Guitar. This Martin Road Series D 12 has a dreadnought body shape constructed from a gloss finished Sitka spruce top and sapele back and sides. The dreadnought shape of this D 12 is full in the arms while remaining comfortable and is fashioned for easy playability. Sitka spruce scalloped X bracing contributes to the rich and resonant voice of this Road Series standby.