Fath Khan Firuz Shah jall allah zillalahu jalalahu / Fi zaman al-imam amir al-muminin Abu'l Fath al-Mutasid billah khulidat khalifatahu . 19mm, 9.01 grams. Struck after 760 AH. White colour, decent quality billon. "The Coins of the Indian Sultanates" D510.
This type was issued in the name of Fath Khan, his father Firuz Shah and the reigning Abbasid Caliph of Cairo Abu'l Fath al-Mutasid.
Firuz II Tughluq placed his son, Fath Khan, in charge of the Eastern portion of the Sultanate (which later became the independent Sultanate of Jaunpur) in 760 AH and allowed him to strike coins in his own name.