Constantius II, AR Siliqua, Nicomedia. AD 351-355. 

Obv: DN CONSTANTIVS PF AVG, pearl diademed, draped, cuirassed bust right.
Rev: VOTIS-XXX-MVLTIS-XXXX within wreath.

Mintmark SMN. 

RIC VIII Nicomedia 81. 
Starting Price: 100 EUR...

Sold by the Dorotheum, Nov. 2013