This is a Brown quadruple reed concertina manufactured by Bill Brown of Brown's Music Store in New Ulm, Minnesota. It was built in the late 1960's and is an excellent sounding and playing concertina. One of the best that I've played.
This instrument belongs to David Suess of New Ulm. David is the regular concertina player in the "Lester Schuft and the Country Dutchmen" Band. He also plays backup for his father, Erwin Suess. This concertina is midi equipped. The midi system was designed and built by me.