View of the external spiral staircase of the Contarini Palace in Venice, figures standing in the foreground. 
<br>Lithograph printed in brown ink
early 19th century (?)
<a rel="nofollow" class="external free" href="https://www.britishmuseum.org/collection/object/P_1943-0709-213">https://www.britishmuseum.org/collection/object/P_1943-0709-213</a>