SUFID: Husayn, 1361-1372, AV fractional dinar (1.14g), Khwarizm, ND, A-2063, F/D-, obverse legend al-mulku lillah /al-'aziz / al-ghaffar, known dated AH770, unpublished by Federov-Davidovich, VF, RR. The reverse text is sikka dhuhaba khwarizm, "gold coin of Khwarizm ", one of the very few Islamic gold coins that actually cites the metal of which the coin is produced.
Estimate: 450- 550 USD