Project for a cross-altar: intended to be executed primarily with colored marbles, Pencil, pen, ink, brush and various water colors on paper, Vertical composition of a cross-altar. One step leads to the upper surface of the altar, which is decorated with an oblong panel with a cross in a circle. The top of the altar features a circular pediment. The wall of the retable is decorated with a framed panel in the shape of a picture with a cross and a rayed glory. Shadow is cast to the right., Italy, 1700-1730, religion, Drawing, Drawing