Antoninus Pius

Antonius Pius was Roman emperor from 138 to 161. He was one of the Five Good Emperors and few events occurred during his 23-year reign. A rebellion in Roman Britain was suppressed, and in 142 a 36-mile (58-km) garrisoned barrier—called the Antonine Wall—was built to extend the Roman frontier 100 miles north of Hadrian’s Wall. A spectacular aureus of Antoninus Pius that is only the second specimen known is expected to fetch $9k.