Constantine I AV Solidus. Trier, 312 AD. 

CONSTANTINVS P F AVG, laureate head right.
VOTIS V MVLTIS X, Victory standing right, inscribing 
VICTORIA AVG in four lines on a shield set on a cippus.

Mintmark PTR.
RIC VI 821; Cohen 744; Sear 15786. 

With permission of Dane's bank, UBS Gold and Numismatics, 2002.
(Sear reference added: Jan. 2012)