Sestertius

The death of Septimius Severus. February 4, 211.

By 210, Septimius Severus‘ campaigning had made significant gains in Britain, despite Caledonian guerrilla tactics and heavy Roman casualties. The Caledonians sued for peace, which Severus granted on condition they gave up control of the Central Lowlands. The Caledonians, short on supplies and feeling their position was becoming desperate, revolted later that year along with the Maeatae. Severus prepared for another protracted campaign within Caledonia. He was now intent on exterminating the Caledonians, telling his soldiers: “Let no-one escape sheer destruction, no-one our hands, not even the babe in the womb of the mother, if it be male; let it nevertheless not escape sheer destruction”. Severus’ campaign was cut short when he fell fatally ill. He withdrew to Eboracum a...

The Julian Calendar. January 1, 45 BC.

  In the mid-1st century BCE Julius Caesar invited astronomer Sosigenes of Alexandria to advise him about the reform of the calendar, and Sosigenes decided that the only practical step was to abandon the lunar calendar altogether. Months must be arranged on a seasonal basis, and a tropical (solar) year used, as in the Egyptian calendar, but with its length taken as 365 1/4 days. To remove the immense discrepancy between calendar date and equinox, it was decided that the year known in modern times as 46 BCE should have two intercalations. This insertion amounted to an addition of 67 days, making a year of no less than 445 days and causing the beginning of March 45 BCE in the Roman republican calendar to fall on what is still called January 1 of the Julian calendar. Previous errors havi...

Roman Denominations

The Roman Empire came to be from the ashes of the Roman Republic and Imperatorial periods, and once established by Augustus in 27BC, the foundation for the expanded monetary system began and would continue until its overhaul by Diocletian. The base unit of the empire was the copper as, and the system was designed mainly in fractions or multiples of four. The largest regular base-metal coin was the sestertius, valued at four asses, and was made of orichalcum or bronze. The denarius was the silver workhorse and valued at 16 asses. Higher up the chart we find the gold aureus, valued at 25 denarii. In-between and below these denominations we find the quinarius (12-1/2 denarii for gold version and eight asses for the silver module), double-sestertius (eight asses), dupondius (two asses), semis ...

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