32 AA Pianotrekkspill, ca. 1935. To kor, 8’ + 8’. 25 tangenter, 32 basser. Unisonor. Ståltoner klinket på felles zinkplater (type bandoneon). Laget på Alfred Arnold Bandoneon, Concertina und Akkordionfabrik, Carlsfeld. 17 x 30 x 30 cm
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3 AA piano accordion, ca 1935. Dual voice, 8’ + 8’. 25 keys, 32 bass buttons. Steel reeds riveted on common zinc plates, like bandoneon. Made by Alfred Arnold Bandoneon, Concertina und Akkordionfabrik, Carlsfeld. 17 x 30 x 30 cm