P-VV (Vila Viçosa) Biblioteca do Palácio Real A.M. D-003
The first folio begins with the end of a chant suggesting that this book was part of a larger one that was splitted and bound separated.
Sancto Antonii antiphons added on folio 137.
ALEGRIA, José Augusto Alegria, Biblioteca do Palácio Real de Vila Viçosa (Lisboa, Fundação Calouste Gulbenkian, 1989).
Square notation over a 5-line red staff with C and F clefs. Semi-mensural notation for the invitatory.