Crispus AE follis, Rome. AD 322. 

CRISPVS NOB CAES, Laureate head right 
Rev: CAESARVM NOSTRORVM around wreath with VOT X 
in two lines, palm branch to left and right.

Mintmark RS.

RIC VII Rome 246; Sear 16771.

Contributed by "James b4" of Forum Ancient Coins.