Trebonianus Gallus AV Binio (Double Aureus). Rome, AD 251-253. IMP CAE C VIB TREB GALLVS AVG, radiate, draped and cuirassed bust to right / FELICITAS PVBLICA, Felicitas standing facing, head to left, holding caduceus and sceptre, resting elbow on column. RIC IV 8 var. (rev. type); C. -; Biaggi -; Calicó 3333b (same dies). 7.54g, 22mm, 6h.
Good Extremely Fine. Extremely Rare; only one other on CoinArchives and the first to come to auction since 2005.
From a private UK collection.
The binio, otherwise called the double aureus, is identifiable by weight and the radiate portrait. It parallels the antoninianus which is distinguished from the denarius in the same way.