GHAZNAVID or late Samanid: AV fractional dinar (0.64g), Nishapur, ND, A--, tentatively anonymous, though the name Muhammad below the obverse field could refer to the Ghaznavid ruler Muhammad (AH421 / 1030), calligraphically similar to gold coins of the late AH300s and early 400s, gold loop attached, Fine to VF, R.
Estimate: 150-200 USD