Constans, AE medallion, 31 mm, 21.7 g. AD 337-350. 

CONSTANS PF AVG, laurel and rosette-diademed, draped, cuirassed bust right.
VIRTVS AVGG NN, emperor standing right, holding spear and globe. 

Gnecchi 27; RIC 388; Kenner 296; Cohen 182; Bellinger, DO 26. 

With permission of cngcoins.com, Mail Bid Sale 78, Lot 1864. May 2008.