Constantine I AE Half-follis (PACI PERPET, RIC VI 355 var.)

CONSTANTINE I, AD 306-337
AE Half-follis (16.72mm, 1.81g, 6h)
Struck AD 312-313. Rome mint
Obverse: FL VAL CONSTANTINVS AVG, laureate and draped bust of Constantine I left
Reverse: PACI P-ERPET, Pax, draped, standing front, head left, holding branch in right hand and standard in left hand; XII in left field, RQ in exergue
References: RIC VI 355 var. (bust left), RCV 16158 var. (same)

A very rare and apparently unlisted variant with a left-facing bust. The reverse design, proclaiming "Eternal Peace", was struck to celebrate the cessation of hostilities after Constantine's victory over Maxentius, and the establishment of a new alliance with his imperial colleague Licinius.

Collection : Roman Imperial - the Constantinian Dynasty