Medieval leaf.- [?Corpus juris canonici], quoting Pope Boniface VIII's Bull, Unam Sanctum of 1302, 1 leaf only, gothic script, in brown ink, main text 40 lines, double column surrounded by legal commentary, 3 line initial "A with ?19th century decoration of a beast with a long tail in margin, 17 other initials (1 5-line, the rest one line) with red and blue decoration or rubric, trimmed at head with loss of text, a few small wormholes, browned, folds, slightly creased, 346 x 240mm., [?Italy], [c. 1350].