The Kushano-Sasanian Kingdom was a polity established by the Sasanian Empire in Bactria during the 3rd and 4th centuries. The Sasanian Empire captured the provinces of Sogdia, Bactria and Gandhara from the declining Kushan Empire following a series of wars in 225 CE. The local Sasanian governors then went on to take the title of Kushanshah or "King of the Kushans", and to mint coins. They are sometimes considered as forming a "sub-kingdom" inside the Sasanian Empire.
Portrait of Kushano-Sasanian ruler Hormizd I Kushanshah (c. 277-286 CE) in Kushan style.
Coin of the last Kushano-Sasanian ruler Bahram Kushanshah (circa 350-365 CE) in Kushan style. Obv: Bahram with characteristic headdress. Rev: Shiva with Nandi in Kushan style.
Kushano-Sasanian ruler Ardashir I Kushanshah, circa 230-250 CE. Merv mint.
Ardashir I Kushanshah in the name of Kushan ruler Vasudeva I, circa 230-245 CE.
The Sasanian Empire or Sassanid Empire, officially known as Eranshahr, was the last Iranian empire before the early Muslim conquests of the 7th to 8th centuries. Named after the House of Sasan, it endured for over four centuries, from 224 to 651, making it the second longest-lived Persian imperial dynasty after the Arsacids of the Parthian Empire.
Initial coinage of founder Ardashir I, as King of Persis Artaxerxes (Ardaxsir) V. c. 205/6–223/4 AD. Obv: Bearded facing head, wearing diadem and Parthian-style tiara, legend "The divine Ardaxir, king" in Pahlavi. Rev: Bearded head of Papak, wearing diadem and Parthian-style tiara, legend "son of the divinity Papak, king" in Pahlavi.
1840 illustration of a Sasanian relief at Firuzabad, showing Ardashir I's victory over Artabanus IV and his forces.
Rock relief of Ardashir I receiving the ring of kingship by the Zoroastrian supreme god Ahura Mazda.
Rock-face relief at Naqsh-e Rostam of Persian emperor Shapur I (on horseback) capturing Roman emperor Valerian (standing) and Philip the Arab (kneeling), suing for peace, following the victory at Edessa.