The accompanying illustrations are the obverse and reverse of a coin found by a detectorist named Keith. The coin had already been identified as a denarius of Commodus but the finder wanted my opinion on the ID and a valuation on the coin.
Firstly, this is a denarius of Commodus as Augustus (AD 172-92). On the obverse is a laureate head of the emperor and a legend that reads M COMM ANT P FEL AVG BRIT. On the reverse the standing figure of Pietas, sacrificing over an altar, is accompanied with a legend reading AVCT PIET P M TR P XII IMP VIII COS V P P.
In volume II of David Sear’s Roman Coins and Their Values denarii of this type are listed as number 5630. They were struck at Rome during AD 186.
This denarius would grade Fine but the legend is weak on both sides. In having the reference to the province of Britannia in the obverse legend could add interest for a collector but in its present overall condition I would price the coin no higher than £35.