Choirbook of polyphonic masses in 29 sections. Consists of 225 folios. Rediscovered in 1994, when acquired from private hands by the National Library. Provenance, according to both volumes of NJE, is south Germany or Austria, and according to Burn (p. 50) perhaps Saxony. Contains 8 four-part masses - five are by Josquin, Brumel & Isaac, including the unique Missa Presulem ephebeatum by Isaac, based on the rotulum by Petrus Wilhelmi de Grudencz. Inscriptions on f.18r probably by Melchior Stubner, a scribe from Krupka, a town in the Ústí nad Labem region. Notation in two different hands.

Consists of four segments: (1) Missa Dominicalis, in a set of gatherings followed by blank pages; (2) next 5 masses & Responsories, copied as a unit with no intervening blanks; (3) Missa Salva nos, in its own set of gatherings; (4) Missa Vulnerasti cor meum in its own set of gatherings. Scribe A copied 1 & 2; scribe B 3 & 4; only scribe A (in 2) included attributions. Paper used by the two scribes is also markedly different.

blind tooled brown leather with two ornamental framed strips showing miniature medallions with portraits of personalities associated with renaissance humanism (Erasmus of Rotterdam, Jan Hus, Philipp Melanchthon and others). Brass fittings on the centre and corners survive, and on the back there are the remains of two paper lables, 'Chorale' and 'N'. Mid 16th century.

was in use in Üsti nad Labem (Aussig am Elbe, north-west Bohemia) during the second half of the 16th century and later, according to the inventory, became part of the local church library.

clear watermark of anchor in a circle with a star

Black void mensural notation; square chant with mensural elements; some black full mensural in monophonic sections

The dating is given (without indicating evidence) by Haar & Lockwood (New Josquin Edition, vol 11 Commentary (2002), p. 24) as 1520-40 and by Elders (NJE, vol 3 Commentary (2003), p. 11) as 1530-50. Horyna (see below) gives 1506-50 based on the watermarks.