The Golden Age of Rome: Imperial Silver. The Roman Empire was the greatest the world had ever known. Its dominions stretched from Britain to Persia, from the Maghreb to Northern Europe, and encompassed every inch of shoreline along the great Mediterranean Sea. Rome endured for centuries, establishing a system of colonization and administration that is still copied and much admired today. This remarkable collection of genuine silver coins traces the history of the Empire from the 2nd through the 3rd centuries, and includes coins of Antoninus Pius, Septimius Severus, Caracalla, Alexander Severus, Gordian III, Philip I, Trajan Decius, Valerian I, Gallienus, and Salonina.