Image Missing: Hearst Museum object titled Coin: billon antoninianus, museum number 8-4052, described as Coin; Billon; Antoninianus; Roman. 4.07 grams, 23 mm. Aurelian, 270-275 AD. Milan, Italy. Obverse: IMP AVRELIANVS AVG, Bust r. radiate. Reverse: ORIENS AVG, Sol striding l., two captives at his feet; S in field r., in exergue XXI