A square-shaped venezuelan cuatro, not usually the shape for this kind of instrument.
Yes, we had the same question when we saw this picture:
This is an ‘Experimental Cuatro design’ made by what we know as an Experimental Luthier, a guy that his only purpose in life is create something totally new from something that’s already created.
the luthier´s name is Roberto Bonaccorsso. He´s from Seattle, Washington and he´s creating experimental cuatros that are not offered in the market.
Some other cuatros he has been making also include equalizators, volume control and many new features.