I've been asked to tune a barrel organ.  The makers stamp is
Montanini, Gastaldi and Pomella Navara, Italia.  The strings have
notes stamped above them.  Starting with the longest strings,
some are  D E F# A H G# A H.

Is anyone familiar with this instrument?  Is anyone familiar with
the scale and what octave(s) should be used.

Thanks,
Howard Goldberg