Valerian I (253-260 A.D.) -  AE Antoninianus - 22.15mm, 3.66g
Obverse - IMP C P LIC VALERIANVS AVG Valerian, his radiate and draped bust right.	Reverse - PIETAS AVGG Valerian and Galerius standing facing left, sacrificing over altar, one holding eagle-tipped scepter, the other parazonium.
The image below was photographed by Heritage Auctions Europe. The image above is my own scan.
Minted in Antioch (Antakya, Turkey) or Samosata (Samsat, Turkey) in 255-256 A.D. Reference: Webb, P.H., "Roman Imperial Coinage", Volume 5, Part 1 (RIC), p60, nr. 284. Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 3, p266, nr. 9955. Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 5, p312, nr. 153. Seaby, H.A. & Sear, D.R., "Roman Silver Coins" (RSC), Volume 4, p54, nr. 153. Göbl , R., "Die Münzprägung der Kaiser Valerianus/Gallienus/Saloninus/Regalianus/Macrianus/Quietus" (G), nr. 1676. Van Meter, D., "Handbook of Roman Imperial Coins" (VM), p241, nr 54. Suarez, R., "ERIC II - The Encyclopedia of Roman Imperial Coins" (ERIC II),  p494, nr. 153 (B8, O5, R57, T61, M1) Suarez, R., "ERIC II - eBook" (ERIC II-eBook),  Vol 3, p417, nr. 153 (B8, O5, R57, T61, M1) Kampmann, U., "Die Münzen der römischen Kaiserzeit", 2nd edition (Kampmann), p311, nr. 88.32. Quality: Very Fine+ Rarity: C (Common)