Watch List notes:

Antoninus Pius as Caesar. Sestertius; Antoninus Pius as Caesar; 138 AD, Rome, Sestertius, 26.34g. RIC-2766 (R3). Obv: [IMP T AEL]IVS CAE - SAR ANTONINVS Head bare r. Rx: [P]AX in exergue (weak), TRIB POT - COS DES II on l. and r., S - C across field, Pax seated l. holding branch in r. hand, while her l. arm is bent downwards behind her to hold slanting scepter. Ex Curtis L. Clay Collection; ex Astarte XV, 27 Nov. 2004, 232. Possibly a unique variant of a very rare sestertius type. RIC lists only one comparable specimen, which however shows Pax bending her left arm upward to hold a vertical scepter which reaches the ground, rather than bending her left arm downward to hold a slanting scepter which descends only to the crossbar of her throne, as on our coin.. Bold VF