Six large bifolia on parchment, c. 507 x 352 mm, from the same parent manuscript.
 
They are ruled in lead point, c. 440 x 256 mm, with music in square notation on five-line staves ruled in red or written on fifteen lines in black ink in prescissa script, rubrics in red, with one, three and six-line initials in red, blue or black, foliation in the upper margins. A parchment tab is attached to the lower edge of the folio 164 recto.
 
The first leaf of the first bifolium, 20 and 21, opens with the prayer of the The Athanasian Creed ‘Qui licet Deus sit et homo, non duo tamen, sed unus est Christus’, (‘Who although he is God and Man; yet he is not two, but one Christ)’. The first leaf of the second bifolium, 28 and 29, begins with Psalm 24:13, ‘ ‘Anima ejus in bonis demorabitur: et semen ejus hereditabit terram’, (‘They will spend their days in prosperity, and their descendants will inherit the land.’). The first leaf of the third bifolium, 34 to 35, contains text from Psalm 21:7, ‘Ego autem sum vermis, et non homo’, (‘But I am a worm and not a man’). The first leaf of the fourth bifolium, 148 and 149, contains Psalm 139:9, ‘Ne tradas me, Domine, a desiderio meo peccatori’, (‘Do not deliver me, O Lord, from my sinful desire’). The first leaf of the fifth bifolium, 164 and 165, contains Psalm 146:2, ‘Nolite confidere in principibus’, (‘Do not put your trust in princes’). The first leaf of the sixth bifolium, folio 166 and 167, contains text from Psalm 147: ‘Edificans Jerusalem Dominus’, (‘The Lord builds up Jerusalem’).
 
A very good example, some early wax marks, some offsetting, some minor pigment loss to the lettering throughout, some staining to the parchment and pricking holes.
 
This set of antiphonal bifolia is a fantastic teaching set as it demonstrates many areas of production, use, and palaeography.