Constans AE medallion, 33 mm, 17.56 g. Rome. ca AD 337-340. 

DN FL CONSTANS AVG, rosette-diademed, draped and cuirassed bust right.
VIRTVS AVG, Constans in military dress and chlamys, standing right, 
holding transverse spear and globe, captive sitting left and right at foot. 

RIC -; Gnecchi -; Friedrich-Kenner -; Dumbarton Oaks - etc. Unpublished with two captives. Platt 199.

With permission of Hess-Divo AG auction 324, lot 108, Oct. 2013

Chronological Provenance:
Dr. H. Longuet Collection.
E. Nicolas Collection. 
Maison Platt, lot 199, March 1970
Bank Leu auction 33, lot 149 (1983); 
Numismatic Fine Arts, auction 14 lot 567; (1984)
Numismatic Fine Arts, auction 20, lot 527 (1988).
M&M Numismatics Ltd, The New York Sale III, lot 784, Dec. 2000.
Hess-Divo AG auction 324, lot 108, Oct. 2013