One of a group of five-fascicle manuscripts, each containing a single piece: this fragment consists of 6 folios (3 bifolios), original size c. 470 x 260 (1 G-C-S Mass). (See also RISM description below.)
Fragments A-D copied by a single scribe. Probably copied at San Petronio; pieces possibly composed by resident musicians. These folios were found in the binding of I-Bsp MS A.XXXVIII by the archivist Sergio Paganelli in 1966 or 1967 (an earlier statement here that they had been found in covers of several 16th-century manuscripts at San Petronio, was incorrect – see RISM).