Watch List notes:

Divo Antoninus Pius after 161AD, under Marcus Aurelius, AR Denarius. Rome mint (Struck after 161AD) 18.0mm; 2.97g; 12h. A: DIVVS ANTONINVS, bare head right. R: DIVO PIO, Altar. RIC III 441 (Aurelius); RSC 357. Fine

Estimate: 100 - 200 USD