etching, 750 x 510 mm (sheet). A part of a large map engraved by Nolli and Piranesi after the drawings of Bolognese architects Andrea Chiesa and Bernardo Gambarini, depicting the course of the Tiber (here the last part from Castel Sant'Angelo to Ostia). Fine impression with coeval colouring, printed on laid paper.
Usual central fold. Scattered foxing. Two lacks on the margin, short tears along the fold, outside the edge of the plate. Otherwise in good condition.