Watch List notes:

Constantius I. As Caesar, A.D. 293-305. AE follis (27.4 mm, 8.89 g, 7 h). Siscia mint, Struck A.D. 294. Rare. FL VAL CONSTANTIVS NOB C, laureate head right / GENIO POPVLI ROMANI, Genius standing left, wearing modius and chlamys over shoulder, holding patera and cornucopia; S in left field. RIC 75a. VF, black patina with earthen deposits. 

This coin belongs in the first series of folles struck at Siscia.