Diadumenian as Caesar. Sestertius

Diadumenian as Caesar; 217-218 AD, Rome, ca. Sept. 217 AD, Sestertius, 22.57g. BMC-149 note = C-15. Obv: M OPEL ANTONINVS DIADVMENIANVS CAES, Bare-headed, draped, and cuirassed bust r. Rx: PRINC IVVENTVTIS, standing l. holding scepter; two standards behind, topped with eagle and wreath; SC in exergue. Cf. CNG E108, Feb. 2005, lot 210, for same dies. Ex Curtis L. Clay Collection. Ex Dionysos eBay, Jan. 2015.. F