Trajan (98-117 A.D.) - Silver Denarius - 18.37mm, 3.35gr
Obverse - IMP CAES NERVA TRAIAN AVG GERM
Trajan, his laureate head right.
Reverse - P M TR P COS IIII P P
Mars, walking right, holding spear and tropy.
Image

Minted in Rome in 101 or 102 A.D. (TR P COS 4)
Reference:
Mattingley, H. & Sydenham, E.A., "Roman Imperial Coinage", Volume 2 (RIC), p248, nr. 52
Sear, D.R., "Roman Coins and their Values" (RCV Millennium.Edition), Volume 2, p103, nr. 3145, variety with Mars on Reverse
Sear, D.R., "Roman Coins and their Values" (RCV 4th Revised Edition), p140, nr. 987, variety with COS IIII
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 2, p42, nr. 228
Seaby, H.A. & Loosley, R., "Roman Silver Coins" (RSC), Volume 2, p91, nr. 228
Van Meter, D., "Handbook of Roman Imperial Coins", p120, nr. 26/8
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  p79, nr.36 (B2, O20, R42, T058)
Quality: about Extra Fine, with minor crack in obverse at 180 degrees