Post-reform radiate

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A Roman copper alloy radiate of Constantius I (AD 293-306), dating to c. AD 303. Mint of Carthage. RIC VI, p. 427, no. 35a.

The post-reform radiate (the Latin name, like many Roman coins of this time, is unknown), was a Roman coin first issued by Diocletian during his currency reforms. The radiate looked very similar to the Antoninianus (pre-reform radiate), with a radiate crown, similar to the one worn by the Roman deity, Sol Invictus, it is different from the Antoninianus because of the absence of the "XXI" that existed on pre-reform radiates, a symbol believed to have indicated a consistence of 20 parts bronze to 1 part silver. The post-reform radiate had little or no silver content; the weight can vary between 2.23[1] and 3.44 grams.[2]

There also exists radiates of Maximian, Constantius I, and Galerius, Diocletian's co-rulers, in the same style.


  1. ^ "Archived copy". Archived from the original on 2005-02-28. Retrieved 2006-09-13.CS1 maint: Archived copy as title (link) retrieved 13 sept 2006
  2. ^