A large cream-colored molded cellulose acetate button of a harp against a background of strings and a treble clef with notes – a wonderful music button. Laurel leaf border. Warning: this button must breathe (i.e. it can not be kept in a closed container as it emits an odor). Molded key turret shank. Backmark D in a diamond with “Pat. D-139069”. Est. selling price is $30-60.