Watch List notes:

Valentinian I AV Solidus. Antioch, AD 364-367. D N VALENTINIANVS P F AVG, pearl-diademed, draped, and cuirassed bust right / RESTITVTOR REIPVBLICAE, Valentinian standing facing, head right, holding labarum and Victory on globe; ANTΓ in exergue. RIC 2a; Depeyrot 30/1. 4.27g, 20mm, 5h.

Fine, probably ex-jewellery.