Constantine II, AE follis of Lyons. 17mm, 3.30 g. AD 320. 

DN CONSTANTINO IVN NOB C, laureate, draped and cuirassed bust right.
VICTORIAE LAET PRINC PERP, two Victories standing facing 
each other, holding between them a shield inscribed VOT PR 
on an altar decorated with an X (Helv. type 4d). 

Mintmark: two captives back to back. 

RIC VII Lyons 77 var (altar type).

With permission of Auktionshaus H. D. Rauch, 8, Lot 613, Oct. 2004