Ardashir I, also known as Ardashir the Unifier, was the founder of the Sasanian Empire, the last empire of ancient Iran. After defeating Artabanus IV, the last King of Kings of Parthia, on the Hormozd
Gold dinar of Ardashir I, 230 AD
Drachma of Ardashir I, minted at Hamadan between 233 and 239
Initial coinage of Ardashir I, as King of Persis Artaxerxes (Ardaxsir) V. c. 205/6–223/4. 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.
Silver drachma of Ardashir I, struck at the Hamadan mint, dated c. 238–239. The obverse of the coin depicts Ardashir I with legend "The divine Mazdayasnian King Ardashir, King of King of the Iranians", while the reverse shows a fire altar with the legend "Ardashir's fire".
Shapur I also known as Shapur I the Great was the second Sasanian King of Kings of Iran. The precise dating of his reign is disputed, but it is generally agreed that he ruled from 240 to 270, with his
Ardashir I
…is written on coins found in Taxila; it is probable to be related to "Sasan", since the symbols on the mentioned coins are similar to the coins of Shapur I. It is remarked in Ferdowsi's Shahnameh about Sasan's Oriental lineage that might imply that his house had come from the Orient. After all and considering…
1840 illustration of a Sasanian relief at Firuzabad, showing Ardashir I's victory over Artabanus IV and his forces.
The Humiliation of Emperor Valerian by Shapur I, pen and ink, Hans Holbein the Younger, ca. 1521. At the time it was made, the above rock-face relief was unknown in the west.
Rock-face relief at Naqsh-e Rostam of Shapur (on horseback) with Philip the Arab and Emperor Valerian
Relief showing Shapur I on horseback, followed by his sons and nobles