Constantine II AE3, 307-324 AD. 

Obv: CONSTANTI-NVS IVN N C, laureate & cuirassed bust right 
Rev: GLOR-IA EXERC-ITVS, two soldiers holding spears and shields with one 
 standard between them; o on banner
Mintmark: PCONST. 

RIC VII Arles 412, rated R3

Contributed by Dane for Antonio Hinojosa, Spain, August, 2008.