Trajan Decius
Trajan Decius became emperor midway through the third century and near the beginning of the chaos that characterized the period between the relative stability of the Severans and the formation of the Tetrarchy by Diocletian. Silver coins of this period declined year by year until there was almost no silver content. The most common denomination was the double denarius or antoninianus first issued by Caracalla late in 214 AD. By the time of Decius, the coin was still struck in silver alloy of a silvery color but the weight had fallen off from the earlier issues. Coins Relating to Military Emperors [Rome] [Coin Collecting]
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