Watch List notes:

MESOPOTAMIA, Carrhae. Caracalla. AD 198-217. AR Tetradrachm (26mm, 13.53 g, 11h). Struck circa AD 215-217. Radiate head right / Eagle standing facing, head and tail left, with wings spread, holding wreath in beak; star to upper right, crescent between legs. Prieur 831. Toned, porous with light deposits in the devices. VF. Extremely rare, only one noted by Prieur, and none in CoinArchives.

From the Michel Prieur Collection. Reportedly ex Blancon FPL 72 (2012), no. 135; Blancon FPL 65, no. 969.