Fig. 1From: Unmasking a wild man: scientific analysis of Bertoldo di Giovanni’s Shield Bearer in The Frick CollectionShield Bearer, Bertoldo di Giovanni, ca. 1470–80, h. 22.5 cm: a The Frick Collection, acc. no. 1916.2.03 and b The Liechtenstein Collection, acc. no. 258Back to article page