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Imperium Romanum -The Roman Empire was sometimes governed by two Augusti, at first as a compact and undivided territory as in the case of Marcus Aurelius and L. Verus, and also of Diocletian and Val. Maximian; but afterwards divided into two parts, the Eastern and the Western.
The Imperial coins are distinguished by their chronological order, and are commonly grouped as follows:
The Twelve Caesars
The Adoptive Emperors
The Severan Period
Crisis and Decline
Recovery of the Empire
The Secessionist Empires
The Late Empire
The Byzantine Empire
View whole page from the |Dictionary Of Roman Coins|