JUAN DE PORRAS: TWO INCUNABULA MISSALS PRINTED IN MONTERREI AND ONE IN SALAMANCA FOR THE DIOCESES OF GALICIA IN THE 15TH CENTURY

Abstract

A comparison was made of the folios with musical notation from the 1494 Auriensis Missale, the Compostellanum Missale printed before February 13, 1496, and the two previously known leaves (on paper) of the Compostellanum Missale held in the Pontevedra Provincial Historical Archive. The involvement of Juan de Porras in the printing of the various copies was confirmed, as the same typeface was used for the text. However, significant differences were observed in the printing of the musical notation in all three, leading us to consider whether we are dealing with the remains of a third, previously unknown, Missale.