MOREAU Louis-Gabriel, known as the elder (Paris 1739 1805) - "The Great Staircase". Original etching. Signed with the artist's initials in point in the upper left plate. Ref : Prouté n°11. Proof of the 1st state (of 2), before the second square line and before the erased address of Naudet, on laid paper. Formerly mounted by the corners on brown laid paper bearing the collection mark of Gustave-François Morin ((1809-1886), painter in Rouen), Lugt 1178. Small margins of the copper. 11.8 x 18.1 cm. Condition A (cut on the copperplate mark and two tiny foxing marks, otherwise fine condition).