Watch List notes:

SELEUCIS and PIERIA, Gabala. Diadumenian. As Caesar, AD 217-218. AR Tetradrachm (25mm, 12.13 g, 11h). Laureate and draped bust right / Eagle standing facing, head and tail left, with wings spread, holding wreath in beak; between legs, crescent over crab. Prieur 1090. Lightly toned with underlying luster, minor metal flaws. Good VF. Extremely rare, only one known to Prieur, and five, including this coin, in CoinArchives.

From the Michel Prieur Collection. Ex Classical Numismatic Group 81 (20 May 2009), lot 819 (hammer $1000).