Two leaves, both with double column of 39 lines of a small Italian secretarial hand, spaces left for initials, a few notes in margins, the second leaf with a watermark of a hunting horn similar to Briquet 7682-88 (mostly recorded in northern Italy from 1413 through the 1420s), small scuffs, stains and some modern repairs to edges of second leaf, overall fair and legible condition, each leaf approximately 305 by 213mm
De carceribus (concerning prisons) is a 14th-century legal study of prisons and imprisonment. Its authorship is uncertain and unlikely to be resolved in the future. In the sixteenth century, it was attributed it to the Italian jurist, Baldus de Ubaldis (1327-1400), and this was followed by a sixteenth-century printing of the text and modern studies until as recent as 1968 (T. Diplovatazio, 'De claris iuris consultis. Pars posterior', Studia Gratiana, X, 1968, p. 298). However, it has also be attributed to other authorities such as Matteo Mattesillani, Angelo de 'Perigli, Pietro d'Ancarano and to a mysterious ""filius domini Baldi