A remarkable 1497 Koberger edition of Juvenal preserving one of the most complete surviving records of early humanist reading. Retaining its original Rhenish binding, the volume was extensively annotated by a German scholar active around 1511, whose notes reveal engagement with Erasmus, Poliziano, Crinito, Reisch, Roman antiquities, and classical literature. Marginalia extending into the gutters demonstrate annotation before binding, while institutional stamps, collector bookplates, and later scholarly notes document more than five centuries of continuous use. Not merely an incunable of Juvenal, but a rare witness to the history of reading itself.