This musical typewriter is a "Typatune". Each key does clearly and loundly present a piano like note and each key represents a different note. I presume it was used for teaching music lessons and maybe typewriting lessons as well. It is fully functional and in very good condition. This is the machine depicted in the photo on page 190 of Adler's: Antique Typewriters, From Creed to Qwerty. We think it dates back to the 1930s or thereabouts. All keys do sound unique notes and we would estimate its condition at 2,2. It is approximatley 12 inches deep, 10.5 inches wide and 4.5 inches high.