Hamamatsu Museum of Musical Instruments in Japan has an interesting collection of string instruments of the guitar/lute family. This chitarra battente looks somewhat peculiar:
If I understand correctly, a chitarra battente is a five course instrument with mixed double and triple courses. However, this particular instrument seems to be made as an istrument with ten single courses. Here are the closeups of its nut and the bridge:
Have any of the folks here seen the instrument like this? If so, how would it be played?