Watch List notes:

Constans (337-350), Solidus, Nicomedia, AD 337-340; AV (g 4,45; mm 21; h 12); D N CONSTA - NS P F AVG, diademed, draped and cuirassed bust r., Rv. VICTORIA CONSTANTIS AVG, Victory seated right on cuirass and shield, inscribing VOT V on shield set on knee, supported by winged Genius standing l; in ex. SMNT. RIC 2; C -; Depeyrot -.
An extremely rare variety, with only three specimens recorded; artfully engraved, well struck, good extremely fine. [From an old collection, bought from ancient auctions].