Watch List notes:

Antoninus Pius Mule. Denarius; Antoninus Pius Mule; 138-161 AD, Rome, 156 AD, Denarius, 3.05g. Possibly unpublished mule. Obv: ANTONINVS A[VG] PIVS P P IMP II. Rx: C - O - S - IIII Annona standing l. holding two wheat ears and resting l. hand on modius set on prow. Ex Curtis L. Clay Collection. A mule from an old reverse die: reverse of BM-841, obverse of BM-844 ff.. MS