Watch List notes:

Antoninus Pius, 138-161 As Rome 146, Æ 27.00 mm., 15.97 g.
Laureate head r. Rev. Facing Minerva, holding spear and shield; at feet, owl. C –, cf. 746 (Athena advancing r.). RIC –. Strack 1005.

Of the highest rarity, apparently the second specimen known and the only one in private hands. Very fine