A curious copy of the work of Julian de Paredes, translated into Portuguese by the religious member of the Military Order of Christ and administrator of the Royal Hospital of San Antonio de los Portugueses in Madrid, Friar Miguel Pacheco. One of the oddest aspects of this copy is the binding being made by reusing parchment - prepared animal skin - and the guard covers containing manuscript text from another document of medieval origin. A piece with many secrets to be unveiled.