Watch List notes:

Constantine II (317-337), as Caesar, AE Centenionalis, AD 320-321, Siscia, CONSTANTINVS IVN NOB C, laureate head right, rev. CAESARVM NOSTRORVM, VOT V in wreath, TSIS below, 3.72g, 12h (RIC 157), some die weakness, otherwise lustrous, extremely fine and with residual traces of silvering.

Estimate: £40 - £60