INCUNABULA PETRUS LOMBARDUS. Liber sententiarium [With the commentary of Henricus de Gorichem, the Tituli quaestionum of Thomas Aquinas, and the Articuli in Anglia et Parisius condemnati], 251 leaves (of 281, lacking blank f.132, and all after f.252, of which one blank), 55 lines and headline, double column, 3- to 8-line initial spaces filled in red ink (some with elaborate flourishes), Q6v with printer's device and colophon, title underlined in ink (with later note in blue ink), several early ink manicules in margins, a few single worm-holes to fore-margin of opening few leaves, contemporary blind-stamped pigskin over wooden boards, a few scattered single worm-holes, rebacked, slightly later metal clasp and catches, strap restored, housed in cloth case [ISTC ip00491000; BMC III 766; Goff P491; GW M32482; HC 10195], folio (310 x 215mm.), Basel, N. Kesler, 22 September 1488