page_title: Roman–Bosporan War
section_title: Sources and dating
hierarchical_section_title: Roman–Bosporan War / Sources and dating
caption_attribution_description: English: Douze nummia à l'effigie de Mithridate II du Bosphore Date&#160;: 39-45 Description revers&#160;: Massue surmontée de la léonté entre un arc dans son carquois et un trident .
context_page_description: The Roman–Bosporan War was a lengthy war of succession that took place in the Cimmerian Bosporus, probably from the year 45 to 49. It was fought between the Pro-Roman and new client-king Tiberius Julius Cotys I and his allies King Eunones of Aorsi and Gaius Julius Aquila against former king and Anti-Roman Tiberius Julius Mithridates and King Zorsines of Siraces.
context_section_description: Sources that mention the conflict include Tacitus's Annals (Book 12, chapter 7), Cassius Dio's Roman History (Book 59, chapter 12), and Peter the Patrician's History. Coins found from the period are an important tool to date the events. The commonly provided dates for the war are 45 to 49, because the oldest coin found featuring the monogram of Cotys has the date 342 Bosporan era (AB), which corresponds to 45 Common Era (CE), and Tacitus relates that Mithridates arrived in Rome in the year 49 after having been driven from the Bosporus.
caption: Coin of Tiberius Julius Mithridates
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