Siscia struck a few fractional bronzes (quarter-folles) starting with radiate busts circa A.D. 295. This coin from Maximianus issued in A.D. 305 is a bit problematic and RIC does not seem completely sure of where it fits in.
Maximianus
A.D. 305
quarter-folles
18x19mm 2.6gm
IMP CMA MAXIMIANVS PF AVG; laureate head.
GENIO POP-VLI ROMANI; Genius standing left, holding patera and cornucopiae.
In ex. SIS
RIC VI Siscia 146
"These very rare coins, known so far for Herculius only, show a portrait which is not truly Herculian, though it is certainly not truly Galerian either...conceivably they were struck at the moment of abdication. It is right, however, to draw attention to the fact that similar coins- not without some problems of thier own- were being produced in group II" RIC VI pg 471, footnote 1
Next, for comparison, is a coin from group II
Constantius I
A.D. 305-6
quarter-folles
19mm 1.9gm
CONSTANTIVS AVG; laureate head.
GENIO POP-VLI ROMANI; Genius standing left, holding patera and cornucopiae.
In ex. SIS
RIC VI Siscia 169a
