Valentinian I AE3 364-375 AD 

Obv: DN VALENTINI-ANVS PF AVG - Diademed bust right, draped 
and cuirassed 
Rev: RESTITV-TOR REIP - Valentinian standing front, 
head right, holding Victory and standard with X on banner.
Exe: SMKB Cyzicus Mint: 

RIC IX, 10a (r) Rare, page 240/ 2.55 g.