Though this coin is a bit worn, I thought that I would post it as a COTD. It seems that nobody was interested in it except me, but that is OK. Interestingly, RIC rates this coin as very common (C2) though they don't actually turn up that often.
Constantine I
Summer A.D. 307
FL VAL CONSTANTINVS NOB C; Laureate and cuirassed bust right.
MARTI PATRI CONSERVATORI; Mars, standing right, r. holding transverse spear, l. resting shield on ground. S/A in fields.
In ex. PTR
RIC VI Trier 725