Aelius. AL series AR Denarius. 211-208 BC. 4.03 g. Mint in Central Italy. 

Head of Roma right, X behind head.
The Dioscuri on horseback galloping right, AL ligate and ROMA in partial linear frame below. 

Crawford RRC 111/1; Syd. 276; Aelia 1. 
Very rare. 

With permission of Numismatica Ars Classica - Auction 61, Lot 498, Oct. 2011.