Watch List notes:

EGYPT, Alexandria. Antoninus Pius. AD 138-161. BI Tetradrachm (24mm, 11.98 g, 12h). Dated RY 8 (AD 144/145). Laureate head right / Draped bust of Serapis right, wearing ornate kalathos; L H (date) across field. Köln 1459-60; Dattari (Savio) 2344; K&G 35.232; Emmett 1426.8. Dark brown patina with a thin layer of green. VF.

From the Rocky Mountain Collection of Alexandrian.