Volusian, Mint Error. Antoninianus; Volusian, Mint Error; 251-253 AD, Branch Mint, Antoninianus, 3.29g. Obv: IMP C C VIB VOLVSIANVS AVG Bust radiate, draped, cuirassed r. Rx: Blank. Possibly struck with the coiner's hammer before the reverse die had been applied?. From the Philip Ashton Collection, purchased from Cameleon Coins, September 2009.An unusual mint error that makes one wonder how it could have happened. MS