Balbinus (April-July 238 A.D.) -  AR Antoninianus - 22.77mm, 6.10g
Obverse - IMP CAES D CAEL BALBINVS AVG Balbinus, his radiate, draped and cuirassed bust right.	Reverse - CONCORDIA AVGG Clasped hands of the co-emperors Balbinus and Pupienus.
The image below was photographed by Paul-Francis Jacquier - Numismatique antique. The image above is my own scan of the coin, using an A4 flatbed scanner.
Minted in Rome, May-June 238 A.D. Reference: Mattingley, Sydenham, & Sutherland, "Roman Imperial Coinage", Volume 4, Part 2 (RIC), p170, nr. 10. Carson, R.A.G., "Coins of the Roman Empire in the British Museum", Volume 6 (BMCRE), p256, nr. 67-70. Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 3, p101, nr. 8484. Sear, D.R., "Roman Coins and their Values" (RCV 4th Revised Edition), p231, nr. 2394. Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 4, p8, nr 3. Seaby, H.A. & Sear, D.R., "Roman Silver Coins" (RSC), Volume 3, p158, nr. 3. Van Meter, D., "Handbook of Roman Imperial Coins" (VM), p223,  nr. 7. Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC II),  p430, nr 14 (B1, O1, R08, T06) Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC II-Digital),  p360, nr 14 (B1, O1, R08, T06) Kampmann, U., "Die Münzen der römischen Kaiserzeit", 2nd edition, (Kampmann) p276, nr. 71.7. Quality: Very Fine+/about Extra Fine Rarity: C (Common).