The OOO is the full sized version of the 1929 Model series. A longer, 25.375 inch scale for additional volume and bass make it a worthy ensemble instrument. You will find the same simple and elegant aesthetics of the 1929-O and 1929-OO versions. The master grade True Mahogany top is correctly dimensioned and hand voiced for a full and complex presence, and the elements for an heirloom guitar are all in place.