Watch List notes:

Gratian (367-383), Nummus, Siscia, AD 379-383; AE (g 1,36; mm 15; h 7); D N GRATIA - NVS P F AVG, diademed, draped and cuirassed bust r., Rv. VOT / XV / MVLT / XX, in laurel wreath; below, ASISC. RIC 31a; C 75.
Green patina, about extremely fine.