NGC XF Galerius AD305-311 Antoninianus. Galerius Valerius Maximianus AD258-311 was Roman emperor from 305 to 311. Galerius and Diocletian campaigned heavily against the Sasanian Empire, pillaging their capital Ctesiphon in 299. He also crossed the Danube to fight against the Carpi, defeating them in both 297 and 300. Even though he was a opponent of Christianity, Galerius ended the Diocletianic Persecution of Christians when he issued the Edict of Toleration in Serdica (modern-day Sofia) in 311.Certified, Graded and Encapsulated by NGC. You Will Receive the Same Type of Coin and Condition Shown, Certificate Number Will Vary As Stock Photos Are Used.