Analysis of information sources in references of the Wikipedia article "Fibula (brooch)" in English language version.
This type of fibula, used to fasten a cloak around the neck, became part of the standard insignia of military personnel during the third century A.D. This example is inscribed in Latin on the bow: HERCVLI AVGVSTE SEMPER VINCAS (May you always be victorious, Hercules Augustus!); the titles probably refer to the tetrarch Maximian, who styled himself as Hercules. The brooch would have been made at an imperial workshop and presented as a gift to a senior member of the imperial staff.
