Valens AE3. 375-378 AD. Arles. 18 mm, 2.12 g.

DN VALENS PF AVG, diademed, draped and cuirassed bust right.
SECVRITAS REIPVBLICAE, Victory walking left holding wreath and palm. 

OF-I across fields.
Mintmark CONST.

RIC IX Arles 9b, type ii (a); Sear 19809-19816. 

With permission of Gitbud & Naumann auction 18, Lot 956, 
June 2014. (mintmark misread as CONS Gamma and misattributed to Constantinople, which did not use the "OF" ("officina") fieldmarks.)