Claudius Æ Sestertius. Rome, AD 50-54. [TI CLAVDIVS CAE]SAR AVG P M T[R P IMP P P], laureate head to right / [SPES AVGVSTA], Spes, draped, advancing to left, [holding flower] and raising skirt; SC in exergue; c/m: NCAPR within rectangular incuse. RIC I 115; C. 85; BMCRE 192. 21.30g, 34mm, 6h.
Good Fine.
From a private Belgian collection.
Found regularly on early Imperial coins, this countermark is likely a validating mark used during the reign of Nero and could mean "N(vmmvs) C(aesare) A(vgvsto) Pr(obatvs)". For further discussion, see Kraay, "The Behavior of Early Imperial Countermarks" in Essays Mattingly, pp. 132ff.