Coins from Parthian Empire
The Partian Empire was a major Iranian political and cultural power in ancient Iran and Iraq.

It was founded in the mid 3rd Century BC when Arsaces I conquered the region of Parthia in Iran.

The earliest enemies of the Parthians were the Seleucids in the west and the Scythians in the east. However, as Parthia expanded westward, they came into conflict with the Kingdom of Armenia, and eventually the late Roman Republic.

The Parthian Empire finally succumbed to internal revolt in 224 AD, and was supplanted by the Sassanid Empire.
Parthian Empire
Mithradates II was king of Parthian Empire from 121 to 91 BC.

He is regarded as the greatest of the Parthian kings, under whom the empire reached its greatest extent.
Orodes II as the king of the Parthian Empire from 57 BC to 37 BC.

He was a son of Phraates III, whom he murdered in 57 BC, assisted by his brother Mithridates. He married a Greek Princess from the Kingdom of Commagene, called Laodice

Orodes' son Pacorus was himself later killed by Ventidius in 38 BC. Orodes, who was deeply afflicted by the death of his gallant son, appointed...
Mithradates III was king of Parthian Empire from 57–54 BC.

Mithridates was a son of Phraates III, whom he murdered in 57 BC, with the assistance of his brother Orodes. Orodes became king of Parthia and made Mithridates king of Media, a Parthian client state.

On account of his cruelty, Orodes turned on his brother and deposed him. Mithridates was forced to flee from Media to R...
Vologases III was a Parthian Prince who claimed the throne of the Parthian Empire about 105, in the last days of Pacorus II of Parthia (80–105) and reigned over the eastern portion of the kingdom to 147. He was the son of Vologases II.

The period was one of civil war in the Parthian kingdom; for the early part of his reign Vologases III contended with Pacorus II's legitimate successors ...