Crispus (Caesar during 317-326 AD), AE3, struck 325-6 AD, Nicomedia.

FL IVL CRISPVS NOB C, laureate, draped, cuirassed bust left.
PROVIDENTIAE CAESS, Camp gate with two turrets and star, 

mintmark MNB

SR 3923/4 var., RIC VII Nicomedia 122

Contributed by Dr. Hubert Lanz, auction November 2000, 
Added July 2011.