The OOO-SP is a smaller bodied guitar with good projection and sweet tone.  What contributes to the sweetness of the tone is the fact that the neck joins the body at the 12^th fret which moves the bridge farther down into the lower bout. This guitar is very comfortable for those who are a smaller stature but wonderful for all players.  This particular example has koa wood back and sides (with a wedge of flamed maple) and a redwood top.  The bindings are purpleheart with an ebony  fret-board and bridge.  This guitar has a black walnut neck which improves tone over mahogany because it is stiffer.

Here is an example of a 000-SP similar to vintage Martin.  This one has a Sitka spruce top and African Mahoghany back and sides.  Has slotted peghead w/Schaller tuners.  The nut on this guitar is 1 3/4" wide and the scale length is 24.9".  Wonderful projection and tone with easy playability. Herringbone roseatte and purfling.