Mithridates III was king of the Parthian Empire from 87 to 80 BC. His existence is disputed in scholarship.
Coin of a Parthian king, possibly Mithridates III, Ray mint
The Parthian Empire, also known as the Arsacid Empire, was a major Iranian political and cultural power centered in ancient Iran from 247 BC to 224 AD. Its latter name comes from its founder, Arsaces
The silver drachma of Arsaces I (r. c. 247 – 211 BC) with the Greek language inscription ΑΡΣΑΚΟΥ "of Arsaces"
Parthia, shaded yellow, alongside the Seleucid Empire (blue) and the Roman Republic (purple) around 200 BC
Drachma of Mithridates I, showing him wearing a beard and a royal diadem on his head. Reverse side: Heracles/Verethragna, holding a club in his left hand and a cup in his right hand; Greek inscription reading ΒΑΣΙΛΕΩΣ ΜΕΓΑΛΟΥ ΑΡΣΑΚΟΥ ΦΙΛΕΛΛΗΝΟΣ "of the Great King Arsaces the Philhellene"
Statue of a Parthian woman, marble from Nisa; National Museum of History, Ashgabat, Turkmenistan