Watch List notes:

ARAB SASANIAN: Anonymous (in the name of Khusro II), AR Dirham (4.01g), SK (Sijistan), AH 64 (Eastern Arabic numerals). The first recorded appearance of Eastern Arabic numerals on a coin, engraved as 46, which is apparently the older arrangement of numbers in Arabic. Date in Pahlavi is crudely engraved. A-P75. About uncirculated. Extremely rare and historically important.