'Hot Potato' harmonichord by the Plastic Injecto Corporation of Union, New Jersey, USA, a subsidiary of the Wm Kraft Co. Oblong harmonichord harmonica of red plastic inscribed ‘MADE IN U.S.A./PATENTED IN U.S.A. AND CANADA 2228058 AND 417511/JOLIE/HARMONICHORD/. Plastic reeds. The player blows or draws breath through the tubular mouthpiece, lifting the fingers from the eight fingerholes to obtain a two octave diatonic scale of written as c major from C4 (c1) to C6 (c3) in the accompanying instructions, but playing in the key of E.
