Part of another large stone; in this are represented Jupiter and the two Dioscuri; the other sitting figure is perhaps T - Stuart James & Revett Nicholas - 1787, 1794

James stuart & nicholas revett. The antiquities of athens measured and delineated by james stuart f. R. S. And f. S. A. And nicholas revett painters and αrchitects, vol. Iii (ed. Willey reveley), london, john nichols, 1794. Date: 1794.