Giambattista Piranesi (1720-1778) Spaccato interno della Basilica di S. Paolo fuori delle mura... (Interior of Saint Paul's Basilica outside the walls). 1749. Etching and burin. 610 x 415 [765 x 540]. Hind 7 (vi/vii). Very fine proof on strong laid paper, before the number 9 added in the right margin. Folio number 10 in pen and sepia ink in the upper right-hand corner. Vertical fold reinforced at foot of verso. Short tears at right edge and another small reinforcement at foot on verso. A few small light moisture rings and marginal soiling. Left edge irregular, ragged, with small binding miter holes and missing. Wide margins. 1st Paris edition.