This is the Hamm-tone Double Flat-back Olympic style archtop guitar.

The body shape of this guitar is very similar to the Epiphone Olympic of the late 1930's and early 1940's.  It has a full 25.5" scale length, a carved Sitka spruce top and an elevated neck with a traditional dovetail joint with bolts and brass inserts, no glue.  The fingerboard has an extension for those high treble notes.  The sides and back are of American flamed black walnut.  One of the unique features of this guitar is that it has two backs.  The inner back is red cedar and the outer is walnut.  They are braced in such a way that they do not touch, thus acting as though the guitar has a built in "tone guard".  The guitar boasts a Virzi Brothers style tone producer and has a snappy and warm tone.  It's a good  rhythm guitar and great for solos, it's tone is somewhere between a good quality archtop and a Maccaferri style guitar.  The pickguard and fretboard are both ebony bound in flamed walnut, where the body is bound with flamed maple.