Unidentified work of grammar

Description: An unidentifed work of nahw (grammar) Extent of original: Manuscript 100 pages 22,7 x 16cm . Condition of original: Bound in leather with leather cover. Spine is broken. Black and red ink, some discoloring. Paper very badly destroyed by insects and partially disintegrating. In very bad condition Date of original: Unknown. 19th century by visual presentation only.