The standard page of this manuscript has 19 long lines and the
height of the various initials is given as lines. The importance of
the different psalms is indicated by the size of the initials,
which range from the 8 lines of the opening Beatus initial to the
4-line initial of Psalm 51. Choir Psalter (Gallican) made and
finely illuminated in East Anglian style for use at the Benedictine
Abbey of Peterborough. It was presumably made for the Peterborough
monk Walter de Rouceby: a notice of his death in 1341 appears on
fol. 7r and an inscription recording his former ownership at fol.
2r.
