I have a Hayashi acoustic that i purchased from a co-worker in late 70's. It has solid top rosewood sides and a 3 pcs rosewood back the name Hayashi inlayed down the head between the tuning keys inlay all around the face the sound hole and big blocks of inlay in the frets on the neck and through the 3 pcs back. Beauitful looking guitar and has great sound. inside the sound hole it has MOUNTAIN stamped Model # W400DE and Serial 603095 made in Japan. I like at lot of others from reading above are trying to find out the history of these guitars with little success. Mine dont say Mountain on the head inlay it say Hayashi and mountain stamped inside . can anyone help or does any know of another one with Hayashi inlay