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Up for auction is a Roman silver Antoninianus coin of Valerian I, minted in 257 AD.
MINT: Rome
OBVERSE; IMP C P LIC VALERIANVS PF AVG
-Radiate and cuirassed bust right.
REVERSE; PROVIDENTIA AVGG
-Providentia, standing left, with baton & cornucopia; at her feet, globe.
REFERENCE: RIC 112-113