Coins from Sasanian Empire
The Sasanian Empire was the last period of the Persian Empire (Iran) before the rise of Islam, named after the House of Sasan who ruled from 224 to 651 AD.

The Sasanian Empire, which succeeded the Parthian Empire, was recognised as one of the leading world powers alongside its neighbouring arch-rival the Roman-Byzantine Empire, for a period of more than 400 years.

The coinage of the Sasanian empire is not only the most important primary source for its monetary and economic history, but is also of greatest importance for history and art history. Only through the evidence of the royal portraits on the coins, does it become possible to identify depictions of kings on other media of Sasanian art such as silverware or rock and stucco reliefs.
Sasanian Empire
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An AR Drachm struck 579-590 AD in Rayy
Obverse: Crowned Bust of Hormizd IV to right

Reverse: Zoroastrian fire altar with two attendants

Diameter: -
Die Orientation: -
Weight: 4.1 g
No notes for this coin
No references provided for this coin
(2) Khosrow I?
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An AR Drachm struck 531-579 AD in Rayy
Obverse: Crowned bust right

Reverse: Fire altar flanked by attendants

Diameter: -
Die Orientation: -
Weight: -
No notes for this coin
No references provided for this coin
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An AR Drachm struck 590-628 AD in Erankhvarrah-Shapur
Obverse: Crowned bust of Khusro II facing right, Pahlavi script to left and right, inside double circle, crescent with star above on four sides in margin

Reverse: Fire altar with attendants at left and right, Pahlavi script to left and right, inside triple circle, crescent with star above on four sides in margin

Diameter: 30 mm
Die Orientation: 3 H
Weight: 4.12 g
The script on the obverse within the circle to the left and right of the portrait translates to something like: "Khusro, may his glory grow"

The reverse script to the right of the right attendant near as I can tell the closest match translates to the Erankhvarrah-Shapur mint. I'm not 100% on this.

The script to the left on the reverse is the regnal year, but I could not match it against the examples on beast coins, which doesn't include every year, but includes several and all the above info which is very helpful with this confusing series.
No references provided for this coin
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An AR Drachm struck 591-628 AD in Istakhr
Obverse: Crowned bust right.

Reverse: Fire altar and attendants.

Diameter: 34 mm
Die Orientation: 0 H
Weight: 4.04 g
No notes for this coin
No references provided for this coin
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An AR Drachm struck 590-628 AD in Shiraz
Obverse: Bearded bust right wearing winged crown surmounted by star in crescent

Reverse: Zoroastrian fire altar; on either side of altar, attendant facing

Diameter: -
Die Orientation: -
Weight: 4.02 g
No notes for this coin
No references provided for this coin
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An AR Drachm struck 309-379 CE in Mint IX | Kabul
Obverse: Pahlavi legend (Crowned bust right)

Reverse: Fire altar flanked by attendants, bust right in flames

Diameter: 22 mm
Die Orientation: -
Weight: 4.04 g
Ex Prof. dr. Andreas Urs Sommer (Gorny & Mosch 204, 5 March 2012), lot 1647.
SNS III Type Ib1/3a; Göbl Type Ia/6a
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An AR Drachm struck 309-379 AD in Kabul | Mint IX?
Obverse: Crowned bust right of Shapur II

Reverse: Fire altar with two attendants; bust right within flames

Diameter: -
Die Orientation: -
Weight: 3.96 g
No notes for this coin
Göbl 102