Watch List notes:

Islamic Coins, Arab Sasanian, Yazdigird III type, silver drachm (4), SK= Sistan, 20 YE =31h, wt. 3.90gm, 3.26gm, 3.11gm, 3.05gm, (Walker p. 4:3, A. 1), very fine (4)
The drachm is the earliest date Islamic coin
(200-250 GBP)