For a related example see no. 20 in Comstock and Vermeule, Greek, Etruscan & Roman Bronzes in the Museum of Fine Arts, Boston. Both bronzes and others listed by the authors (op. cit. p. 23) are thought to be miniature versions of "the late Archaic Athena Promachos destroyed by the Persians when they sacked the Acropolis in 480 B.C."