Watch List notes:

SAFAVID: Tahmasp I, 1524-1576, AV ¼ mithqal (1.15g), Yazd, AH981, A-O2593, bold strike, full mint & date, VF-EF, RR. Gold coins of Tahmasp I struck after AH979 are extremely rare, unknown to us for the 3rd edition of the Checklist of Islamic Coins.

Estimate: 200-300 USD