Hanniballianus (Rex Regum 'King of Kings' of Pontus and Armenia, 335-337 A.D.)
Billon reduced centenionalis / AE3/4 - 16.52mm, 1.53g

Hanniballianus, his bare-headed, draped and cuirassed bust right.
CONS followed by the officina mark S in exergue.
The river-god Euprates reclining right, resting on scepter,
overturned urn at his side, from which water flows, reed
growing in the background.

Minted at the 6th offiina (S) in Constantinopolis (Istanbul, Turkey) in 336 or 337 A.D.

Kent, J.P.C., "Roman Imperial Coinage", Volume 7 (RIC), Constantinople, p589, nr. 147, obverse legend 11b, bust A4
Voetter, O., "Die Münzen der römischen Kaiser, Kaiserinnen und Caesaren von Diocletianus bis Romulus, Katalog der
hinterlassenen Sammlung und Aufzeichnung des Herrn Paul Gerin", (Voetter-Gerin), Constantinopolis, p101, nr. 1.
Carson, R.A.G., Hill, P.V., & Kent, J.P.C., "Late Roman Bronze Coinage" (LRBC), part I, Constantinople, p25, nr 1036.
Sear, David R., "Roman Coins and their Values" (RCV Millennium Edition), Volume 4, p544, nr 16905.
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERIC II),  p973, nr. 5 (B1, O2, R2, T1, M1, Exe: CONSS)

General reference (No exact determination possible in these works):
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 7, p364, nr 2.
Failmezger, V., "Roman Bronze Coins From Paganism To Christianity 294-364 A.D." (Fm), nr 374HA.
Kampmann, U., "Die Münzen der römischen Kaiserzeit", 2nd edition, (Kampmann), p432, nr. 143.2.
Van Meter, D., "Handbook of Roman Imperial Coins" (VM), p294, nr 2, with Ol/3.

Quality: Fine+/Very Fine-
Rarity: R2