Alexander I Theopator Euergetes, who used the epitaph Balas, was the ruler of the Seleucid Empire from 150 BC to August 145 BC. Picked from obscurity and supported by the neighboring Roman-allied King
Coin of Alexander I Balas, Antioch mint
Marriage commemorative of Alexander I Balas and Cleopatra Thea.
Coin of Demetrius II Nicator
Demetrius I Soter reigned as king of the Hellenistic Seleucid Empire from November 162 to June 150 BC. Demetrius grew up in Rome as a hostage, but returned to Greek Syria and overthrew his young cousi
Alexander Balas
…supported by the neighboring Roman-allied Kingdom of Pergamon, Alexander landed in Phoenicia in 152 BC and started a civil war against Seleucid King Demetrius I Soter. Backed by mercenaries and factions of the Seleucid Empire unhappy with the existing government, he defeated Demetrius and took the crown in 150 BC…
Silver drachm of Demetrius I Soter. Reverse shows the cornucopia, with Greek legend: ΒΑΣΙΛΕΩΣ ΔΗΜΗΤΡΙΟΥ ΣΩΤΗΡΟΣ, Basileōs Dēmētriou Sōtēros, "of savior king Demetrius."
Silver tetradrachm of Demetrius I Soter.