Constantine II, AE Follis. Lyons. 18.5mm, 4.22g.

DN CONSTANTINO IVN NOB C, laureate, draped, cuirassed bust right, seen from the back.
VICTORIAE LAET PRINC PERP, Two Victories facing one another,
 holding shield inscribed VOT/PR over plain altar (altar type
Helvetica 4b). 
Mintmark: 2 captives back to back.

RIC VII Lyons 76 var (altar type), rated R2.

RIC lists only altars decorated with a cross, X or triangle.

Contributed by Bruno Vincent, March 2011.