Trajan Decius (249-251 A.D.) -  AR Antoninianus - 22.02mm, 4.44gr
Obverse - IMP C M Q TRAIANVS DECIVS AVG
Trajan Decius, his radiate, draped and cuirassed bust right
Reverse - ADVENTVS AVG.
Trajan Decius riding horse left, raising hand and holding scepter.

Minted in Rome 250 A.D.
Reference:
Mattingley, Sydenham, & Sutherland, "Roman Imperial Coinage", Volume 4, Part 3 (RIC), p121, nr. 11b 
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 3, p198, nr. 9366
Sear, D.R., "Roman Coins and their Values" (RCV 4th Revised Edition), p246, nr. 2691, plate 8
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 5, p186, nr. 4
Seaby, H.A. & Sear, D.R., "Roman Silver Coins" (RSC), Volume 4, p24, nr. 4
Van Meter, D., "Handbook of Roman Imperial Coins", p231, nr. 3
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  p267, nr. 8  (B5, O2, R02, T26, M3)
Quality: Very Fine+