QARAKHANID: Ahmad b. Muhammad, 1045-1052, BI dirham (4.96g), Barskhân, AH435, A-3377, Zeno-18177 (this piece), cited as Arslan Tegin, with his overlord Sulayman b. Yusuf (ruler at Kashghar, cited as Arslan Khaqan), extremely rare mint, possibly unique, VF, RRR.
Estimate: 200-300 USD