Just found this tiny bronze of Constantius II in my old boxes. It measures only 13 mm. and weighs 1.6 g. Reverse reads within a wreath VOT XX MVLT XXX. In exergue one can read SMANI. It's supposed to have been struck in Antioch. I searched a lot but could not find an attribution. I managed to scan at double size and maximum resolution. Hope someone can tell a more precise attribution.
http://romancoin.info There's an excel spreadsheet for the VOT coinage, among many other types. You can filter by emperor, mintmark, bust type, etc.
According to Wildwinds, Looks to be : Constantius II, Antioch. 347-348 AD Obv: DN CONSTAN-TIVS PF AVG, pearl diademed head right Rev: VOT XX MVLT XXX within wreath Mintmark: SMAN Delta I RIC VIII Antioch 113, rated C4
Sorry, the info doesn't match the image attached on wildwinds. For Constantius II, other varieties could be SMANT, SMANA, and SMANB, but no SMANI reference that I could find.
It is indeed RIC 113. There were 15 different officina in Antioch at that time, and your coin was struck in all 15, so RIC 113 includes everything from SMANA through SMANEI
I see well. I also think that one officinae could be scarcer than another. Moreover some people seek to collect all the officina of RIC 113 or another set.