Etching and engraving, 1749-50. 557x406 mm; 22x16 inches, wide margins. Fourth state (of 6); Robison's second edition, third issue, printed during the 1760s-1770s. From Carceri d'Invenzione. A brilliant, richly-inked and dark impression with very strong contrasts and no sign of wear. Hind 8; Robison 34.
