DRAWING after G.B. PIRANESI - "The Pillar with Chains." 19th century. WATERCOLOR on paper, unsigned. Watercolor based on the 18th-century engraving by Giovanni Battista Piranesi for the series “Le Carceri d’Invenzione” (The Imaginary Prisons). 45 x 54.5 cm. Condition A/B (a few small holes in the margins, some stains on the reverse, slight indentation in the paper in the upper right corner, in good condition).