Top Left: Imperial Roman Silver Denarius of Emperor Hadrian (117-138 AD). 

Top Right: Hellenistic Seleucid Silver Drachm of Alexander I, Balas (145-140BC), set with a cabochon ruby. 

Center: Hellenistic Silver Drachm of Alexander the Great, with the head of Herakles wearing the skin of the Nemean Lion. 

Bottom Left: Repuclican Roman Silver Denarius of Q. Cassivs (55BC), with personified head of Libertas. Set with cabochon sapphire. 

Bottom Right: Republican Roman Silver Denarius of C. Vibius C.F