Constans AE medallion, 30.5mm, 24.58 g. Rome. ca AD 340-350.

CONSTANS PF AVG, laureate, draped, cuirassed bust right.
VRBS ROMA, Roma seated left on shield, holding Victory on globe and sceptre. 

Gnecchi 31; Cohen 117; RIC VIII 403.

With permission of cngcoins.com, auction 390, Lot 551, Feb 2017.

Gnecchi_31.jpg