Probus (276-282 A.D.) -  Silvered Antoninianus - 21.22mm, 3.47gr
Obverse - IMP C PROBVS PF AVG
Probus, his radiate, helmeted and cuirassed bust left,
holding shield and spear. Shield decorated with a gorgoneion.
Reverse - CONCORDIA AVG
XXI in Exergue. VII in right field.
Concordia standing left, holding patera and cornucopiae.

Minted in Siscia (Sisak, Croatia) in 280 A.D.
Reference:  
Webb, P.H., "Roman Imperial Coinage", Volume 5, Part 2 (RIC), p88, nr. 660g (obverse 3G)
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 3, p472, nr. 11966, obverse variety Fh
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), nr. 157
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  p365, nr.39, (B08, O35, R021, T004, M6)
Coin featured on Grzegorz Kryszczuk's Probus site (http://www.probvs.net) at: RIC.660.html
in the Tantalus online coin registry (http://www.tantaluscoins.com) at http://www.tantaluscoins.com/coins/8032.php
and on Dirty Old Coins (http://www.dirtyoldcoins.com) at http://dirtyoldcoins.com/natto/id/probus/pro220.jpg
The reverse image is featured in ERIC on p368, as the plate coin for Probus' Reverse Type 4.
Quality: Very Fine, with complete silvering left on coin