BURID: Tughtekin, 1104-1128, BI dirham (1.48g), NM, ND, A-780, Zeno-143932 (this piece), excellent strike for this type, VF, RRR. Citing the caliph al-Muqtadi, who died in AH487 (1194 AD), ten years before the apparent accession of Tughtekin, whose name is quite clear on this coin (as discussed on Zeno). It is conceivable that Tughtekin was some sort of nominal ruler or regional governor ten years before his assumed accession.
Estimate: 150-250 USD