Queen of Castile (1373–1418) as the wife of King Henry III of Castile. Manuscript DS, in Latin, signed “Yo la Reyna,” one page, 13.25 x 12.75, 1407. Untranslated document signed as Regent for her son Juan II. Document has been professionally silked on the reverse. Intersecting folds, some scattered paper loss along folds affecting some of the text, scattered toning, and some reinforcement to folds on reverse, otherwise very good condition. The reverse retains its paper seal. RR Auction COA.