Bazzi and Bianchi phonendoscope in leather cover metal case, by M. Wallach, German Bazzi and Bianchi phonendoscope in leather cover metal case
Bazzi and Binachi's phonendoscope, cased, with instructions, German (?), 1896-1904 Bazzi and Binachi's phonendoscope 1896-1904
Bazzi and Bianchi phonendoscope, with case, European, 1897-1904 Bazzi and Bianchi phonendoscope 1897-1904