Classical Revival Snake Brooch
Designed by Michaengelo Caetani
Castellani and Sons, Rome
The legend, "Latet angulus in herba," which literally translates as "Danger hides in the grass," has the sense, as Stephanie Walker has pointed out, of "Danger lurks everywhere" -- here possibly a reference to Papal spies and the dangers of those seeking Italian liberty and reunification.
Museo Nazionale Etrusco di Villa Giulia, Rome