If you want to get a campgate from Sirmium it has to be Constantius II. Sirmium issued SARMATIA DEVICTA reverse for Constantine I and Crispus and Constantine II had ALAMANNIA DEVICTA reverse. So Constantius alone appeared on the campgates. Out of the 15 Imperial mints striking coins during the LRB campgate period, Sirmium is the only one that struck a campgate for a sole ruler. Constantius II A.D. 324- 325 Ӕ nummus 18mm 3.3g FL IVL CONSTANTIVS NOB C; Laureate, draped and cuirassed bust left. PROVIDENTIAE CAESS; campgate with two turrets and ✶ between them. in ex. SIRM RIC VII Sirmium 53 https://constantinethegreatcoins.com/campgates/ if you have any from Sirmium post them
Crispus Mint: Sirmium 324/325 AD AE Follis Obvs: FL IVL CRISPVS NOB CAES, bust laureate head right. Revs: ALAMANNIA DEVICTA, Victory advancing right holding trophy & palm, next to bound captive on right. •SIRM• 18x19mm, 3.14g Ref: RIC VII 49
some more Sirmium (modern Sremska Mitrovica, Serbia) here is one that needed a light cleaning Constantine I A.D. 324-325 18x20mm 3.1g CONSTAN-TINVS AVG; laureate head right. SARMATIA DEVICTA; Victory advancing r., holding trophy, palm branch, spurning captive std. on ground to right. in ex. SIRM RIC VII Sirmium 48 This coin refers to a major victory over the Sarmatians in 322 A.D. This victory, however, was a big reason for the civil war with Licinius, since the territory that Constantine fought the Sarmatians in was actually under the control of Licinius. “When Constantine learned that the Sarmatians, who live near Lake Maeotis, had sailed across the Danube and were pillaging his territory, he led his army against them…he killed many, took more prisoners and put the rest to flight.” Zosimus 2:21 "Licinius did not accept the gold coinage on which Constantine emblazoned his victory against the Sarmatians, but melted it down and converted it to other uses, giving no answer to those who faulted him with regard to this than that he did not wish foreign affairs to have a place in domestic business." Petrus Patricius (circa A.D. 500- 565) The Lost History of Peter the Patrician F 208 and this coin is an unofficial issue that pairs Constantine I with an ALAMANNIA DEVICTA that was only officially issued for Crispus and Constantine II Constantine I circa A.D. 324- 325 17mm 2.1gm CONSTAN-TINVS AVG, Laureate bust right. ALMANNI-A DEVICT, Victory standing right, on bound captive with head turned to left, holding laurel branch and trophy. In ex. SIRM