Constantine I, AE half follis, Rome. 312-313 AD.

FL VAL CONSTANTINVS AVG; Laureate, cuirassed bust right.
PACI P-ERPET; Pax standing facing, head left, holding 
branch and sceptre.
XII in left field.
Mintmark RP.

RIC VI Rome 356 var (holding sceptre, not standard), 
unpublished type.

With permission of Zach of beastcoins.com, Jan 2006.