Comparable to a number of drawings by Bertoia such as nos. D15, D26, D29bis, D44, D93, figs. 227, 185, 109bis, 72, 64 of D. Degrazia, Bertoia, Mirola and the Farnese Court, Milan, 1991. A fresco of a related subject based on a design by Bertoia, executed around 1571, is in the Oratorio del Gonfalone, Rome (D. Degrazia, op. cit., no. P16, fig. 223, for the drawing fig. 224).