Valentinian I Siliqua, 1.49g; 18mm, 364-367 AD. Lyons. 

Obv: DN VALENTINI-ANVS PF AVG, pearl-diademed, draped and 
cuirassed bust right
Rev: RESTITV-TOR REIP, Emperor standing facing, head right, 
holding labarum with X and barb on shaft, and Victory on globe. 

Mintmark SLVG.

RIC IX Lyons 6a. Rare. 

Contributed by ebay seller Lucernae, Nov. 2011.