Plate number 4 of a set of 16 subjects titled Carceri, 1749 – 1760
Original engraving, etching, sulphur dye, direct etching, burnishing
553 × 417 mm, thread margins
Very fine impression of the first state (of 6), before much rework, mainly additions of new objects, in particular a great spoked wheel near the centre ; probably of the first or second printing of the first edition published by Giovanni Bouchard, between 1747 and 1760 in Rome. Horizontal crease only visible on the reverse, small rubbed spots in the right-side angles, small restored tears along the right edge.
Watermark: Fleur-de-lys in a circle (Robison, watermark 5)

Reference: Robison 31 i/vi