Heliocles I

Silver tetradrachm of Heliocles (145–130 BC)
Obv: Bust of Heliocles
Rev: Zeus standing, with thunderbolt and sceptre. Greek legend: ΒΑΣΙΛΕΩΣ ΔΙΚΑΙΟΥ ΗΛΙΟΚΛΕΟΥΣ Basileos Dikaiou Heliokleous, "Of King Heliocles the Just".
Silver tetradrachm of Heliocles (145–130 BC)
Obv: Bust of Heliocles helmetted and in uniform.
Rev: Zeus standing, with thunderbolt and sceptre. Greek legend: ΒΑΣΙΛΕΩΣ ΔΙΚΑΙΟΥ ΗΛΙΟΚΛΕΟΥΣ Basileos Dikaiou Heliokleous, "Of King Heliocles the Just".
Yuezhi copy of a coin of king Heliocles. The Yuezhi are thought to have invaded his territory and taken over his coinage as a consequence.

Heliocles I (Ancient Greek: Ἡλιοκλῆς, romanized: Hēlioklēs, meaning "glory of Helios"; reigned 145–120 BC) was a Greco-Bactrian king, brother and successor of Eucratides the Great, and considered the last Greek king to reign over the Bactrian country. His reign was a troubled one; according to Roman historian Justin, Eucratides was murdered crossing the Hindu Kush by one of his sons, although this is highly disputed and Justin fails to name the perpetrator. Eucratides’ death led to instability, even civil war, which caused the Indian parts of the empire to be lost to Indo-Greek king Menander I and southern Bactria to be lost to the Yuezhi.