This text is seemingly identifiable with the Liber de intentionibus by the 14th-century Dominican friar Franciscus de Prato.
The readings of its incipit and explicit correspond to those published in Jean-Pierre Rothschild, Bibliographie annuelle du Moyen Age tardif, 11 (2001), no. 1129, as the beginning and the end of a treatise attribuited to Franciscus Pratensis in Madrid, Biblioteca Nacional, MS. 3368, fols 70 recto-80 recto. These readings also match the incipit and explicit of the already known edition of Franciscus’s text printed on leaves v2 verso-v6 recto of Johannes Versoris, the Dicta super septem tractatus Petri Hispani, edited by Petrus de Sancto Johanne and published in Venice by Hermannus Liechtenstein on 22 May 1487 (ISTC iv00238500; see GW M32404).Franciscus’s treatise was later reprinted in Seville in 1530 and survives in four other 15th-century manuscripts.
If the identification of the anonymous text is correct, there are two more lingering questions: the attribution of the printing to Pachel and Scinzenzeler rather than to Johannes Antonius de Honate, and the dating of the book to around 1481-83 instead of circa 1488 (as suggested by BSB-Ink V-181).
Only the carefull consideration of the types used in the edition and the philological comparison of the text with the surviving manuscripts copies and the 1487 edition will answer the final question: it this the editio princeps of Franciscus’s Liber de intentionibus?
Bibliography for the text:
Fabrizio Amerini, “La Quaestio Utrum subiectum in logica sit ens rationis e la sua attribuzione a Francesco da Prato. Note sulla vita e gli scritti del domenicano Francesco da Prato”, Memorie Domenicane, n.s. 30 (1999), 147-217 (p. 211).
Fabrizio Amerini, “La figura e la filosofia di Francesco da Prato”, in Dal convento alla città. Filosofia e teologia in Francesco da Prato O.P. (XIV secolo), Atti del Convegno Internazionale di Storia della Filosofia Medievale, Prato, Palazzo Comunale, 18-19 maggio 2007, ed. Fabrizio Amerini, Firenze, 2008, 15-29 (p. 17 and n. 8).