Vienna: Johann Singriener the Elder & Hieronymus Vietor, 1514, vdm: 78
The printer’s mark is hand coloured in red.
Very heavily annotated with red and black; many marginal comments, underlined words etc. In the musical example on f. B2 an early modern hand has written: Discan. Altus, Bassus, Tenor underneath the voices. Tenor and Bassus were originally assigned to the incorrect voices, but these labels were subsequently cancelled and re-assigned.
In musical example on f. B4v: all notes are coloured in red.