The son of Antiochus IV was still a minor when he inherited the Seleucid throne (164 BCE).  He accompanied his guardian, Lysias, to Jerusalem when the latter sought to reinforce the Greek garrison against Judah Maccabee's seige. By the time they got there the Jewish rebels were in control of the city.  When Lysias agreed to a peace treaty that granted Jews religious freedom, Antiochus violated the terms of that agreement by ordering the imprisonment & execution of Honi, the Jewish high priest, & the destruction of the city's defenses.  Before he could institute more repressive measures his forces had to return to Antioch to ward off his cousin Demetrius' challenge to his rule. But he was betrayed.  Both he & his guardian were executed by Demetrius.

References: 1 Maccabees 6:17-7:4
                   Josephus, Antiquities 12.296, 360-390; 20.234-235.
                   ______, War 1.40-47.
                   Appian, History of Rome: the Syrian Wars 46-47.

Other online resources:

• I Maccabees 6 - RSV translation of a Jewish perspective on the last days of Antiochus IV and events following his death [BibleGateway].

• Antiochus V Eupator - Jona Lendering's biographical sketch chronicles events & lists primary sources [Livius: Articles on Ancient History].

• Antiochus V - article in Wikipedia's web.

Rare profile of the young monarch. Although the other side of this tetradrachma preserves the image of an enthroned Zeus holding a scepter & the figure of winged Victory used on the coins of Antiochus IV, it lacks the latter's explicit claim of divinity.  Rather, like coins of earlier Seleucids, it bears the simple inscription Basileos Antiochou ["of King Antiochus"] with the epithet Eupatoros ["of a fine father"] added at the bottom.