Watch List notes:

Antoninus Pius Mule: TR P XV on both sides. Denarius; Antoninus Pius Mule: TR P XV on both sides; 138-161 AD, Rome, 152 AD, Denarius, 3.33g. Strack-p. 322, 41 (2 spec., in Sofia and Gotha). Obv: ANTONINVS AVG PIVS P P TR P XV Head laureate r. Rx: TR POT XV - COS IIII on l. and r., Vesta standing l. holding ladle and Palladium. Ex Curtis L. Clay Collection; ex Naumann E51, 5 March 2017, 523. Rare mule, apparently the third recorded specimen.. MS