Watch List notes:

Vologases IV (147-191), Tetradrachm, Seleukeia on the Tigris, February AD 176 ; AR (g 13,76; mm 25; h 12); Bearded bust l., wearing double banded diadem and tiara; behind, B, Rv. ΒΑΣΙΛΕΩΣ / ΒΑΣΙΛΕΩΝ / ΑΡΣΑΚΟY / OΛΑΓΑΣΟΥ / ΔΙΚΑΙΟY / ΕΠΙΦΑΝΟYΣ / ΦΙΛΕΛΛΗΝΟΣ, king enthroned l., receiving a diadem from Tyche l.; above, ΗΠΥ. Sellwood 84.53.
Lightly toned, good extremely fine.