The 'Milanese' mandolin was tuned like a lute (and similar to a guitar), unlike its more familiar 'Neapolitan' counterpart, which was tuned like a violin. As with earlier versions of the Milanese Mandolin, this instrument has only four courses (one single and the rest double) and its frets would have been made of gut and replaced, once worn. No other instrument by Piero Antonio Gavelli of Perugia is known to have survived, alhough a certain Giaccomo Gavelli, also from Perugia and presumably a descendent, was recorded as producing stringed instruments there during the 1790s.