Watch List notes:

ISLAMIC COINS. ARAB SASANIAN. YZKRT = Yazdigird III type, Silver Drachm, SK = Sistan 20 = 31h, 3.61g (Walker, A Catalogue of the Arab-Sassanian Coins in the British Museum, p.4:3; Album, A Checklist of Islamic Coins, 3rd edition, 1). Extremely fine.

Estimate: £200-250