Watch List notes:

ISLAMIC, Seljuks. Great Seljuk. Muhammad Alp Arslan. As governor in Herat, AH 450-455 / AD 1058-1063. AV Dinar (23mm, 3.11 g, 12h). Citing Chaghri Beg Da'ud as overlord. Harat (Herat) mint. Dated AH [4]50 (AD 1058/9). Album K1670; ICV 1817. VF, die shift on obverse, areas of flat strike, some evidence of die polishing. Very rare.

Ex Classical Numismatic Group Electronic Auction 252 (23 March 2011), lot 378.