The Rationale divinorum officiorum describes the sources, forms, and symbols of Christian ritual. Originally published in 1459, it was very popular in the 15th century and was published in numerous incunable editions. This edition is dated from an MS in the Utrecht UB copy. H *6469 = 6470 = 6488; GW 9125; BMC I 130; Bod-inc D-189; BSB-Ink D-344; ISTC id00427000; Goff D-427.
314 leaves, initials in red, rubricated (some marginal spotting, faint unobtrusive waterstains in last few quires, a1 with two marginal chips and repaired not affecting text). Contemporary blindstamped pigskin over wooden boards, metal corner- and centrepieces, two metal catches, 15th-century German manuscript rubricated list of apostles used as front pastedown, rear pastedown a manuscript fragment of a saint’s life (lacking clasps, rebacked preserving backstrip).