3 bifolios each containing one voice part (D1, D2, A) of a single motet in 7vv. The collection is incomplete, 4 voice parts (& 4 bifolios?) are missing.
At the beginning of D1 is the inscription "Responsio Leon: petulz" (or 'petule'?), perhaps naming an otherwise unknown composer?
The piece is titled "Ich weiss mir" but each of the surviving voice parts begins with a lengthy pause so the remainder of the opening text is unknown.