Dear Yann Dahhaoui, I looked quickly at LE CATALOGUE DE LA BIBLIOTHEQUE DE L'ABBAYE DE SAINT-VICTOR DE PARIS DE CLAUDE DE GRANDRUE, 1515, ED. Gilbert Ouy and Verokina Gerz-von Buren (CNRS, 1983). The manuscripts at St. Victor were renumbered a number of times. Claude de Grandrue gave them double letters before the number, so your reference is not to his catalog. Nor does it seem to be to the catalog of Etienne Regnard (ca. 1620, though his 877 is mostly to do with saints, some obscure), nor that of Vyon de'Herouval (ca. 1690) as the numbers of these are collated with Claude de Grandrue's shelf numbers in the copious indexes in the book. You might find what you are looking for though if you gave this book some close study. Best, Hugh Feiss, OSB %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%