Gallienus (253-268 A.D.) -  AE Antoninianus - 19.52x20.31mm, 2.95gr
Obverse - GALLIENVS AVG
Gallienus, his radiate head right
Reverse - APOLLINI CONS AVG
Reverse Z in exergue.
Centaur walking right, drawing bow.
Gallienus
Minted in Rome in 267 or 268 A.D.
Reference:
Webb, P.H., "Roman Imperial Coinage", Volume 5, Part 1 (RIC), p145, nr. 163k (under Sole reign of Gallienus)
Sear, D.R., "Roman Coins and their Values" (RCV Millennium Edition), Vol. 3, p288, nr. 10177.
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), p354, nr. 72
Seaby, H.A., "Roman Silver Coins" (RSC), Volume 4, p64, nr. 72.
Van Meter, David, "Handbook of Roman Imperial Coins", p244, nr 19/1.
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  unlisted (B23, O09, R023, T024, M5)
Quality: Fine+