Watch List notes:

ANCIENT COINS, PARTHIAN COINS, Mithradates III (87-80 BC), Silver Tetradrachm, minted at Seleucia on the Tigris, diademed and medium bearded bust left in tiara, decorated with a star on side, spiral torque, dotted border, rev archer enthroned right, letter A below bow, seven line inscription ΒΑΣΙΛΕΩΣ ΜΕΓΑΛΟY ΑΡΣΑΚΟY AYTOKPATOPOΣ ΦΙΛOΠATOPOΣ ΕΠIΦΑNOYΣ ΦΙΛΕΛΛΗΝΟΣ, 15.90g, 12h (S 31.2 (Orodes I)). About very fine and very rare.
from The David Sellwood Collection of Parthian Coins

Estimate: £800-1000