Watch List notes:

Gratian (367-383), Solidus, Constantinopolis, AD 378-383; AV (g 4,38; mm 21; h 6); D N GRATIA - NVS P F AVG, diademed, draped and cuirassed bust r., Rv. CONCOR - DIA AVGG, Constantinopolis, helmeted, seated facing, head r., on throne ornamented with lions' heads, holding sceptre and globe; r. foot on prow; in ex. CONOB. RIC 44a; C 5.
Minor peeling on obverse, about extremely fine.