regency of Rostam, called for the overthrow of Boran and the return of the prominent Parsig figure Bahman Jaduya, who had been dismissed by her. Boran was killed shortly after; she was presumably strangled by Piruz Khosrow. Hostilities were thus resumed between the two factions. Not long afterwards, both Rostam and Piruz Khosrow were threatened by their own men, who had become alarmed by the declining state of the country. Rostam and Piruz Khosrow thus agreed to work together once more, installing Boran's nephew Yazdegerd III (632–651) on the throne, and so putting an end to the civil war. According to the Muslim historian al-Tabari (died 923 AD), Boran reigned for a total of sixteen months. The name of the Iranian appetizer Borani, may be derived from Boran. Coin mints and imperial ideology During her reign, Boran's coinage was reverted to the design used by her father, due to her notions of the past and her personal respect for him. Her minted coins included some that were more formal in design and were not intended for general use. On her coins, it is declared that Boran was the restorer of her heritage, i.e., the race of gods. The translated inscription on her coins reads: "Boran, restorer of the race of Gods" (Middle Persian: Bōrān ī yazdān tōhm winārdār). Her claim of being descended from the gods had not been used since the 4th-century, when it was used by the Sasanian shah Shapur II (). As with all Sasanian rulers, Boran's main denomination was the silver drachm (Middle Persian: drahm). Between the reigns of Khosrow II and Yazdegerd III, Boran appears to have been the only ruler who minted bronze coins. Only one gold issue of Boran is known, stored at the Museum of Fine Arts in Boston. The obverse of Boran's drachms and bronze issues depict her turned to the right, while on the reverse the Zoroastrian fire altar is depicted together with two attendants. Boran's gold issue depicts her facing out instead of being in profile. On Boran's silver and bronze coins, double or triple row of pellets surround her portrait and astral signs of a crescent and a star are placed on the outer margin. Boran is depicted wearing a round cap with three jewels or rosettes and a diadem; her bejewelled braids of hair fall from beneath the cap. The diadem consists of two rows of pellets,