Incunabulum - Leaf from the Catholicon of Johannes Balbus, Strasbourg by Adolf Rusch, c. 1470. Double-column print on heavy handmade paper with indistinct watermark, painted initials in red and blue, as well as a large decorative initial F with acanthus and spreading tendrils, isolated repairs in the paper, spotted, fragment at the lower right corner, 48 x 32,5 cm, behind passepartout 60 x 42 cm