Drawing on verso is a study for the right side of the etching, "Rovine del Tempio de' Castori nella citta di Cora," in "Antichita' di Cora," 1764, f. 541. That drawing was probably made on site when Piranesi visited Cori with Hubert Robert in 1763.
While some of the Morgan's drawings relate to the published plates of the Diverse maniere, others represent further ideas and variations for chimneypiece designs. This is one of several designs that highlight natural forms, like the bird at left and the creature at lower right, which Piranesi identified with an inscription as a coniglio, or rabbit.
Numbered at upper right, inverted, in graphite, "84"; inscribed on verso, within temple entablature, in red chalk, "CASTORI.POLLVCI. DEC.S.FAC / M.CALVIVS.M.F.P.N.".
Watermark: Fleur-de-lis in double circle.
Morgan, Jane Norton, 1868-1925, former owner.
Morgan, Junius Spencer, 1892-1960, former owner.
Morgan, Henry S. (Henry Sturgis), 1900-1982, former owner.
Stampfle, Felice. Giovanni Battista Piranesi, Drawings in the Pierpont Morgan Library. New York : Dover, 1978, no. 66, repr.