The Bluesbox Collection The back, neck and sides are made from mahogany. The slotted peg head is faced with rosewood and sports a 5 pointed star inlay which was typical on OS produced Supertone guitars. The oddest thing about this instrument is that at some point, for some reason, someone decided to cut down the depth of the guitar by removing the back, cutting off about an inch all around the sides and then putting the guitar back together. As can be seen in this side view, the maximum depth of the body (at the foot) is a little under three inches! Not surprisingly, this affects the sound of the guitar, causing it to have a reduced bass response but an added presence in the treble and mid ranges.