Watch List notes:

EGYPT, Alexandria. Antoninus Pius. AD 138-161. Æ Drachm (32mm, 24.88 g, 12h). Dated RY 20 (AD 156/157). Laureate bust right, slight drapery / Serapis-Agathodaimon on horseback right; [L] Γ K (date) across field. Köln 1852; Dattari (Savio) 8690 var. (placement of date); K&G 35.820; Emmett 1679.23. Dark brown patina with areas of green encrustation/deposits. VF. Rare, a one-year reverse type for Pius.

From the Stein A. Evensen Collection.