Watch List notes:

EGYPT. Alexandria. Antoninus Pius, 138-161. Drachm (Bronze, 34.0 mm, 21.81 g, 12 h), year 20 = 156-157. ΑYT Κ T ΑΙΛ ΑΔΡ ΑΝΤΩΝΙΝΟC CEB EYC Laureate bust of Antoninus Pius to right, slight drapery on far shoulder. Rev. L K Draped bust of Serapis to right, wearing kalathos; below, eagle standing right with wings spread, head left. Dattari (Savio) 2826. Geissen 1787 var. (bust). K&G 35.723 var. (bust). RPC IV.4 Online temp. 15182. Red-brown patina. Very fine.
From the collection of Jean-Pierre Righetti, acquired privately from Forum Ancient Coins, 5 March 2013.