KHWARIZMSHAH: Mangubarni, 1220-1231, AR broad dirham (6.51g) (Ghazna), AH(6)19, A-1744, Zeno-155540 (same dies), full bold last two digits of the date, mint name confirmed by die-link to the Zeno specimen, about 25% flat, extremely rare with legible date, VF, RR.
Estimate: 200-300 USD