Watch List notes:

Constans (337-350), Nummus, Siscia, AD 337-340; AE (g 1,49; mm 16; h 6); CONSTAN - S P F AVG, diademed, draped and cuirassed bust r., Rv. GLOR - IA EXERC - ITVS, two soldiers facing, heads turned towards each other, each holds spear and shield; between them, one standard; in ex. ASIS (crescent with dot). RIC 99.
Dark patina, minor flan crack, extremely fine.