The Issues of Severus and His Sons in A.D. 211

Gerelateerde uitgaven

• Curtis L. Clay; 1970. “Nilus and the Four Seasons on a New as of Septimius Severus”, The Numismatic Chronicle, Series 7, Volume 10, pagaina's 71-87.
• Philip Victor Hill; 1964. “Notes on the Coinage of Septimius Severus and His Family, A.D. 193-217”, The Numismatic Chronicle, Series 7, Volume 4, pagaina's 169-188.
• Harold Mattingly; 1932. “The Coinage of Septimius Severus and His Times. Mints and Chronology”, The Numismatic Chronicle, Series 5, Volume 12, pagaina's 177-198.

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