The Post-reform Radiate denomination
The Post-reform Radiate (Latin name unknown) was a Roman coin denomination first issued by Diocletian during his currency reforms.

The radiate looked very similar to the Antoninianus (pre-reform radiate), with a radiate crown like Sol Invictus. The difference is 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 varies between 2.23 and 3.44 grams.

It was struck under Diocletian, Maximian, Constantius I, and Galerius.
Post-reform Radiate

(1) Constantius I 295-296 AD
Obverse: radiate, cuirassed bust right; FL VAL CONSTANTIVS NOB CAES
Reverse: Constantius I standing right on left, holding scepter, receiving Victory on globe from Jupiter to right, holding scepter; CONCORDIA MILI_TVM / HB
Ref: RIC VI Heraclea 15
(2) Diocletian c. 295-299 AD
Obverse: radiate, draped and cuirassed bust right; IMP C C VAL DIOCLETIANVS P F AVG
Reverse: Diocletian standing right, holding parazonium, receiving Victory on globe from Jupiter standing left holding long scepter; CONCORDIA MI_LITVM / KΓ
Ref: RIC VI Cyzicus 16a
(3) Galerius 303 AD
Obverse: Radiate, draped and cuirassed bust right from behind; GAL VAL MAXIMIANVS NOB C
Reverse: Legend within wreath; VOT / X / F K
Ref: RIC VI Carthage 36
(4) Galerius 299 AD
Obverse: radiate, cuirassed bust right; GAL VAL MAXIMIANVS NOB C
Reverse: legend within wreath; VOT / . / X / T
Ref: RIC VI Ticinum 39b
(5) Severus II AD 306-307
Obverse: IMP C SEVERVS P F AVG, radiate, draped and cuirassed bust right
Reverse: CONCORDIA MILITVM, Severus standing right, holding short sceptre and receiving Victory on globe from Jupiter standing left, holding sceptre; Δ in central field, ALE in exergue
Ref: RIC 84; Sear 14682