Gloria and the first part of the Credo (until "descendit de caelis") have been copied on ff. 114v-117r; the second part of the Credo (from "Et incarnatus est") has been copied on ff. 209v-211r. According to LEVERETT 1990, 208, this pairing of Gloria and Credo can not be considered a Missa brevis (as it was indicated in the AMMM); the indication "Alia missa brevis eiusdem toni" would instead refer to the Mass on f. 110v. Bonnie J. Blackburn (s.v. "Gaffurius [Gafurius], Franchinus", in "Grove Music Online") agrees with this hypothesis. However Ludwig Finscher (s.v. "Gaffurio, Franchino", in "MGG Online") seems to refer to this Mass as the "Alia missa brevis eiusdem toni" ("nur Gloria und Credo"). See also the further notes regarding [II.23]. According to Bortone (AMMM 3, vi-vii) this mass should be ascribed to Gaffurius, because he has copied it and because of the word "alia".