India, Delhi sultanate, 1360-1388 AD., Firoz Shah Tughlaq and his son Fath Khan.

India, Delhi sultanate, Fath Khan bin Firoz Tughlaq (Firoz Shah Tughlaq and his son Fath Khan), no date (760-790 AH), struck ca. 1360-1388 AD. at iqlim al-Sharq (Jaunpur),
Tanka (17-18 mm / 8,03 g), billon, axes irregular alignment ↑-> (ca. 60°),
Obv.: fathkhan firuz shah jall allah zillalahu jalalahu (Fath Khan Firuz Shah, May Allah glorify the shadows of his glory).
Rev.: fi-zaman al-imam amir al-muminin abi abd allah khulidat khilafatuhu.
Goron/Goenka D511 ; NW 750 . cf. http://www.worldofcoins.eu/forum/index.php/topic,16375.0.html , http://www.zeno.ru/showphoto.php?photo=113389 .

Fateh Khan was invested in AH760 with the insignia of royalty by his father Firuz Shah Tughluq and allowed to strike coins in his own name in iqlim al-Sharq (Jaunpur). Tanka with the name of the caliph Abu 'Abd Allah.

thanks to Arthur Needham and Tariq ("Ansari") for the ID