Bronze quarter follis, 19mm, 2.39gm, issued AD 305/306 Siscia mint.
Obv: MAXIMIANVS AVG, Laureate head facing right.
Rev: GENIO POPVLI ROMANI (SIS in ex.), Genius standing left holding patera and cornucopiae.
References: Sear 14580, RIC 169b.
Scarce.