Watch List notes:

Antoninus Pius. A.D. 138-161. AR denarius (19 mm, 3.45 g, 1 h). Rome, A.D. 145-147. ANTONINVS AVG PIVS P P, laureate bust of Antoninus Pius right, slight drapery on far shoulder / COS IIII, thunderbolt set on draped throne. Cf. RIC 137 (bust); cf. BMC 536-9 (same); cf. RSC 345 (same). Unpublished with slight drapery on bust. Good very fine. 

From the Maple Leaf Collection.