Watch List notes:

SELEUCIS and PIERIA, Antioch. Herennius Etruscus. As Caesar, AD 249-251. BI Tetradrachm (25.5mm, 10.92 g, 11h). 3rd officina. Struck AD 250-251. Bareheaded, draped, and cuirassed bust right; ••• below / Eagle standing right on palm frond, with wings spread, holding wreath in beak; S C in exergue. Prieur 625 (this coin); McAlee 1154 (this coin illustrated); RPC IX 1651/2 = 3 (this coin cited twice in error). Toned with areas of find patina, a few spots of verdigris. VF. Extremely rare, two known to Prieur, and none in CoinArchives.

From the Michel Prieur Collection. Ex Münz Zentrum 65 (9 November 1988), lot 337.