Giambattista Piranesi (1720-1778 )Veduta di Piazza Navona sopra le rovine del Circo Agonale (Navona Square). 1751. Etching and burin. 550 x 405 [765 x 540]. Hind 16 (v/vi). Very fine proof on strong laid paper, the price erased, before number 28. Folio number 29 in pen and sepia ink in the upper right corner. Normal yellowed median vertical fold on recto, with reinforcement at foot on verso. One broken vertical fold and small sepia ink stain in upper margin. Left edge irregular, slightly ragged, with small binding tab holes. Wide margins. First Parisian edition.