Constantius II, AR Siliqua, 19 mm, 2.4 g. 

No legend, laurel and rosette-diademed head right. 
VOT-XX-MVLT-XXX in four lines within wreath. 

Mintmark SMN. 

RIC VIII Nicomedia 38; Sear 17903.
Rated R3. 

With permission of Numismatik Naumann auction 62, Lot 806, Feb. 2018.