Anonymous, AR denarius, (3.76g) 189-180 BC, Helmeted head of Roma
     right, X behind. / Diana in biga right, crescent above, ROMA in
     exergue. 

RSC 5a, Cr 140/1, BMC 574. Syd. 339. 

With permission of numislanz.de, Auktion 102, lot 372