Speculum Romanae Magnificentiae: The Colosseum. Artist: Anonymous. Dimensions: sheet: 15 1/16 x 21 15/16 in. (38.2 x 55.8 cm) mount: 19 15/16 x 26 3/8 in. (50.7 x 67 cm). Series/Portfolio: Speculum Romae Magnificentiae. Date: 16th century. This print