Binding fragment. Part of the so-called 'Lost Choirbook II'. Other leaves are in:
GB-Chester, Cheshire and Chester Archives, ZCX/1
GB-London, Royal College of Physicians, MS 734
GB-Nottingham, Archives Office, PR 20,332
GB-Oxford, All Souls College, MS 330
GB-Oxford, New College, printed books BT1.7.14 and BT1.89.7-8 (olim Ω.14.5 and C.1).