Bronze, 15.61 grams, 34.51 mm. Rome. 41-42 AD. Obverse: TI CLAVDIVS CAESAR AVG P M TR P IMP, laureate head right, counterstamped DV. Reverse: SPES AVGVSTA, Spes standing left, holding flower and raising hem of robe, SC in exergue. RIC 99; Cohen 85; Sear 1853. Fine-good fine. The "DV" countermark was used to downgrade underweight sestertii to the value of dupondii. Claudius was very fair about his coinage and usually ordered these light sestertii to be downgraded to dupondii, so that people got their moneysworth, so to speak. He even permitted many well made counterfeits to remain in circulation, albeit also counterstamped and downgraded to a dupondius or an as.
A significant coin which has been published on wildwinds.com