Opis was an ancient Near East city near the Tigris, not far from modern Baghdad. The equivalence of Opis and Upi are now usually assumed but not yet proven. Early on it was thought that the ideogram f
A similar Kudurru of Marduk-nadin-akhe
Seleucia, also known as Seleucia-on-Tigris, Seleucia on the Tigris or Seleucia ad Tigrim, was a major Mesopotamian city, located on the west bank of the Tigris River within the present-day Baghdad Gov
Opis
…near the Diyala River. The precise site of the city has been uncertain for a long time, though at one point thought to be near or under the city of Seleucia. The site of Tel Abir was also proposed as the location of Opis. Several texts suggest that Upi is in the same area as the city of Akkad, also unlocated…
The upper part of a bronze statuette of Hercules (also bronze Heracles of Mesene or Characene), from Seleucia, Iraq. Both thighs (not shown, see below) have a bilingual inscription (Greek and Parthian), Iraq Museum, Baghdad.
Small statuette of a naked woman, from Seleucia on the Tigris, Iraq, 3rd–2nd century BC. Iraq Museum, Baghdad
Tetradrachm of Mithridates I; Seleucia on the Tigris mint.
Detail, inscribed, Greek and Parthian script, lower part of a bronze statuette of Hercules, from Seleucia on the Tigris, Iraq. Iraq Museum