ASSASSINS AT ALAMUT (BATINID): al-Hasan III, 1210-1221, AV dinar (5.22g), Kursi al-Daylam, AH608, A-C1920, Vardanyan—, Both the obverse and reverse calligraphic style is similar to contemporary Ghorid and Khwarizmshah gold coinage. The obverse has the royal titles, al-sultan / al-mu azzam jalal / al-dunya wa l-din / al-hasan bin muhammad, with the mint/date formula in the margin.
The reverse is traditionally Sunni, la ilah illa Allah / muhammad rasul Allah / al-nasir li-din Allah / amir al-mu minin, with bism Allah al-rahman al-rahim followed by part of the Qur an verse 9:33 in the margin. This example is exquisitely struck and is likely the finest known Batinid coin of any of the six rulers who issued coins., EF, RRRR. Al-Hasan III abandoned the Batinid allegiance to the Fatimid Isma ilism, converting to Sunnism and recognizing the Abbasid caliph al-Nasir li-Din Allah, at or very shortly after his accession in AH607 (1210 AD). All known coins of al-Hasan III are gold dinars, of which only three examples were known to Vardanyan & Hamdan, who published the corpus of Batinid coins in 2005, one with legible mint name (Kursi al-Daylam) but all with date off flan, all three preserved in the Tübingen collection.
Since then, one example has appeared at auction, also with both mint & date off flan and about ¼ broken off (Morton & Eden Auction 99, Lot 120). This example clearly shows the mint name, and is the only known example with legible date. Because it is dated AH608, it reveals that al-Hasan s Sunni conversion must have taken place very early in his reign.