Constantius II, AE medallion. Rome. AD 347-350. 

DN CONSTANTIVS PF AVG, laurel and rosette-diademed, draped and cuirassed bust right.
VIRTVS AVG, Constantius, bare-headed, standing right, holding 
transverse spear and globe, captive at foot right. 

No mintmark. 

RIC VIII Rome 400; Gnecchi 41-42.

With permission of cngcoins.com, Jan. 2003.
Sold for $5,000.