Speculum Romanae Magnificentiae: The Column of Trajan. Artist: Anonymous, Italian, 16th century; After Antonio da Labacco (Italian, near Vigevano ca. 1495-after 1567). Dimensions: mount: 26 5/16 x 19 1/2 in. (66.8 x 49.6 cm) sheet: 21 1/8 x 14 3/8 in