Valentinian I. 364-375 AD. AV Solidus. Antioch mint. 

DN VALENTINI-ANVS PF AVG, rosette-diademed, draped and cuirassed bust right.
RESTITVTOR REPVBLICAE, Valentinian standing facing, head 
right, holding Victory on globe and standard with cross on banner.
Chi-Rho in left field.
Mintmark ANTS. 
RIC IX 2(b).viii. 

Used by permission of CNG, www.historicalcoins.com.
Sold for US$750.