See Bannister, H. M. Monumenti vaticani di paleografia musicale latina ID# 285, 547 ff.IIIr,57v, 12th C Metz musical doodles. Flyleaf ff.IIr-v, 158-159 is a fragment of mortuary roll from St. Remi in Reims, dated to 1278/9. Possibly Dufour #204 (Vol 2)