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Postumus, Usurper 259-269. Antoninianus, Cologne, 266/267. BI, 20.38 mm, 4.25 g. Radiate, draped and cuirassed bust r. Rv. Serapis standing facing, head turned to l., raising the r. hand and holding long scepter. RIC V.2, 329. Toned. Exceptional portrait. EF/Good VF. Rare.