For a time, the city was called Antiochia in Commagene. As Antiochia in Commagene, it served as the capital for the Hellenistic kingdom of Commagene from c. 160 BC until it was surrendered to Rome in 72. A civil metropolis from the days of Emperor Hadrian, Samosata was the home of the Legio VI Ferrata and later Legio XVI Flavia Firma, and the terminus of several military roads.
Ancient Samosata continues to the present day as the Turkish town of Samsat. The old town of Samsat was submerged in 1989 under the Ataturk Dam. A new town bearing the same name was built for the population dislocated by the sinking of the old town.
Modern location: Submerged

Reverse: Φ ϹΑΜΟϹΑΤ ΙƐΡ ΑϹΥ ΑΥΤΟΝΟ ΜΗΤΡ ΚΟΜ, turreted Tyche seated on rock, l., holding poppy and two ears of corn, resting arm on rock, resting foot on swimming river-god (Euphrates)
Die Orientation: 12 H
Weight: 11.12 g

Reverse: Within wreath: ΦΛA / CAM / MHTPO / KOM
Die Orientation: -
Weight: 4.68 g

Reverse: City goddess left seated on rocks, holding grain ears, facing eagle standing on her right hand, below pegasos left; ΦΛ CAMOCATEWN METPOΠ KOM
Die Orientation: -
Weight: 20.9 g

Reverse: SPES PVBLICA. Spes standing left, holding hem of skirt and presenting flower to prince, standing right in military attire, holding spear.
Die Orientation: -
Weight: -
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Reverse: PIETAS AVGG, Valerian and Gallienus standing facing each other, sacrificing over altar
Die Orientation: 12 H
Weight: 3.69 g

Reverse: turreted woman standing right, presenting wreath to Valerian standing half left, wearing military dress, holding scepter; RESTITVT ORI_ENTIS
Die Orientation: -
Weight: 4.4 g

Reverse: Valerian II standing half right with head left, crowning trophy to the left with wreath holding shield and spear; PRINC IVVENT_VTIS
Die Orientation: -
Weight: 3.98 g