Watch List notes:

Antoninus Pius. A.D. 138-161. Æ as (26 mm, 10.64 g, 5 h). Rome, A.D. 139. IMP T AEL CAES HADR ANTONINVS AVG PIVS, laureate head of Antoninus Pius right / [P M TR POT] COS II, S C across field, Fortuna standing left, holding rudder and cornucopiae. RIC 533b. Two-tone brown patina. Very fine. 

Ex London Ancient Coins E-Auction 7 (15 December 2011), lot 129.