Valens AR Siliqua. Nicomedia, 367-375 AD. 

DN VALENS-PF AVG, pearl diademed, draped, cuirassed bust right
VOT X MVLT XX within wreath.

Mintmark SMN
RIC IX Nicomedia 22b. Rated Rare.
Cohen 96b. 

With permission of Roma Numismatics, May, 2010