190 leaves of thick paper, 189 of which contain musical notes and liturgical text in black, with 4-line staves in red (the 190th leaf with the staves unused). Foliated in red on the outer margin of the recto of each leaf. With 46 3-inch multi-colored initials, and numerous 2-inch initials in red or blue. 47x25 cm. (18½x13¾"), early 16th century thick wooden boards, subtly and intricately stamped in blind, spine and marginal portions of covers replenished or overlaid with contemporary leather, 5 large brass bosses on each cover, brass corner protectors, portion of original vellum label present on front board.

Rare complete manuscript gradual on very thick paper, in striking medieval binding - most surviving graduals of the period are on vellum, those on paper are very uncommon. On an unnumbered leaf at the front is an index, penned in Latin in a later hand. Elsewhere on the text are a few notations in Spanish. The pastedowns are vellum leaves from a later, probably 16th century, liturgical manuscript with musical notations incorporating five-line staves.