though not in RIC, this coin is well attested and other workshops were even noted by Voetter.
Constantine I
A.D. 306
26x27mm 9.2gm
FL VAL CONSTANTINVS NOB CAES; laureate head right.
GENIO POPV-LI ROMANI; Genius standing left, modius on head, naked but for chlamys over left shoulder, right holding patera, left cornucopiae; in right field I.
In ex. ANT • over •
RIC VI Antioch --
King and Spaer, "A Hoard of Coins from Northern Sinai," NC 1977, # 4000-4009.