Watch List notes:

ARAB-SASANIAN: Khusraw type, ca. 666-670, AR drachm (3.58g), LD (Rayy), year 27, A-5, Malek, with rabbi in ObQ3, thus an issue of Ziyad b. Abi Sufyan as struck AH47-50, but dated in uncertain calendar, unpublished, choice EF, RRR. Malek cited only year 26 of this type, which he calls "doubtful"; this piece confirms the existence of this type, thus the only piece of this type of any date. Rayy (LD) is a rare mint for all Arab-Sasanian coins (common for purely Sasanian).

Estimate: 200-300 USD