‘Large marble vase decorated with a relief of the sacrifice of Iphigenia', plate 54 from a set of 55 plates, <i>Vasi, candelabri, cippi, sarcofagi, tripodi, lucerne, ed ornamenti antichi disegnati ed incisi dal Cav. Gio. Batt. Piranesi</i>, etching, by Giovanni Battista Piranesi, first published in Rome, 1778