Commodus (177-192 A.D.) - Silver Denarius - 17.64mm, 3.57gr
Obverse - M COMMODVS ANTON AVG PIVS
Commodus, his laureate head right
Reverse - TR P VIII IMP VI COS IIII P P
Mars, advancing right, holding spear and trophy.

Minted in Rome in 183 A.D. (TR P 8, IMP 6, COS 4)
Reference:
Mattingley, H. & Sydenham, E.A., "Roman Imperial Coinage", Volume 3 (RIC), p372, nr. 54
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 2, p393, nr. 5715, reverse variety with IMP VI
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 3, p342, nr. 878
Seaby, H.A. & Loosley, R., "Roman Silver Coins" (RSC), Volume 2, p252, nr 878
Van Meter, D., "Handbook of Roman Imperial Coins", p164, nr. 117/1
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  p154, nr.109 (B07, O39, R229, T112)
Quality: Very Fine-