Augustus, AE sestertius, Lyons Mint.

CAESAR AVGVSTVS DIVI F PATER PATRIAE, Laureate head right. 
Altar of Lugdunum, ROM ET AVG in exergue. 

RIC 231A (Altar II series); Cohen 236; BMCRE 565; Paris 231a.

Very rare.

With permission of Numismatica Ars Classica - Auction 72, Lot 1427, May 2013.