C.F. MARTIN & CO., NAZARETH, PENNSYLVANIA, 1939 AN ACOUSTIC GUITAR, 000-18 Bearing the logo C.F. Martin & Co. / EST. 1833 at the headstock, stamped internally C.F. MARTIN & CO. NAZARETH, PA. and OOO-18 / 72210 on the neck block, the spruce top with shaded (sunburst) finish, with mahogany back and sides, the mahogany neck and ebony fingerboard with pearl dot markers, with ebony bridge, with later Martin molded hardshell case Length of back: 19 3⁄8 in. (49 cm.) Overall length: 39 ¾ in. (101 cm.)