The Crisis of the 3rd Century was a period in which the Roman Empire nearly collapsed under the combined pressures of invasion, civil war, plague, and economic depression. It began with the assassination of Emperor Severus Alexander by his own troops in 235.
By 268, the empire had split into three competing states: the Gallic Empire, the Palmyrene Empire, and the Italian-centered and independent Roman Empire. Coins from the competing empires are covered in the Secessionist Empires category.
In 270 AD, emperor Aurelian reunited the empire - coins from his reign and until the Tetrarchy was created by Diocletian in 284 AD are covered by the Recovery Period category.
By 268, the empire had split into three competing states: the Gallic Empire, the Palmyrene Empire, and the Italian-centered and independent Roman Empire. Coins from the competing empires are covered in the Secessionist Empires category.
In 270 AD, emperor Aurelian reunited the empire - coins from his reign and until the Tetrarchy was created by Diocletian in 284 AD are covered by the Recovery Period category.