Cover of the register of 'Ravi 3' (1568-1569) of the vicariato di Gavorrano. [Ziino] Bifolium. In the bottom margin is written 'ser Francesco Sardelli. Maggio 1568'. The motet Sanctus itaque patriarcha Leuntius is attibuted in the MS Bologna Q15 to Antonio da Cividale (Antonius de Civitate Austrie), and the motet Puer natus is included in MS ModA of the Biblioteca Estense; the remainder are unique to this fragment and are transmitted anonymously.
(Addendum: Cuthbert and Nyikos identified two concordances for the Gloria)