Drachm - Narseh

Narseh seized power at nearly seventy years old by overthrowing his grand-nephew Bahram III in 293 AD, making his the last successful dynastic coup within the Sasanian house for over a century. His reign ended in military catastrophe: defeated by the Caesar Galerius at the Battle of Satala in 298, he surrendered territories including Mesopotamia and five provinces beyond the Tigris under the Treaty of Nisibis — the most humiliating peace Rome had extracted from Persia in the dynasty's history.

The SNS Iran unpublished attribution marks this as a variety not yet fully catalogued within the standard sequence.