Shahada spread on both sides, date and mint in fields. Obverse upper margin: Bek - probably for Bektuzun, lower margin: Sahl, dated 376 AH (986 CE), 25mm, 1.86 grams. Bukhara mint. Zeno #41290.

Sahl was the governor of Bukhara. Not sure why the first part of Bektuzun's name is written as well, it might be an error of some sort. Very rare.