Aemilian. 253 AD. AR Antoninianus (3.08 gm). 

IMP AEMILIANVS PIVS FEL AVG, radiate and draped bust right
ROMAE AETERNA, helmeted Roma standing left with phoenix on globe and spear, shield at side. 

RIC 9, Cohen 41; Sear5 9842.

With permission of Numismatik Lanz, 2006, sold for 300 Euros.