Gallienus AE sestertius ("interregnum issue"). 27 mm, 10.81 g. Rome, AD 268. 

GENIVS PR, laureate and turreted head of the Gallienus as the Genius of the Roman people right. 
INT VRB above and beneath large SC, all within laurel wreath. 

RIC 1; Cohen 333; Goebl 702i.
Rare. 

With permission of Leu Numismatik AG - Web Auction 10, Lot 1447, Dec. 2019.