Watch List notes:

ISLAMIC COINS, ARAB SASANIAN, Khusraw II type, Silver Drachm, GD = Jayy 29, obv margin baraka, 3.36g. Good very fine and extremely rare, apparently an unrecorded type.
The word baraka ("blesssing") in the obverse margin at 4 o'clock appears to be unrecorded for the Arab Sasanian silver coinage.

Estimate: £2000-2500