Zarb ("struck at") / Zarb ("struck at"). 19mmx17mm, 1.28 grams. Mintless, but probably from Qirim mint. Zeno #41114; Lebedev M57.
Very rare type - only two pieces listed on Zeno, one is fragmented and one is in poor quality. The weight of this coin is a full pul - the discussion on Zeno pertaining to the denomination of this issue is thus resolved. Very rare overall, especially in this quality.