All inscriptions are as described here:
O: DN FL CL IVLIANVS PF AVG, helmeted cuir., diad., bust left with shield and spear
R: VOT/X/MVLT/XX within a wreath, mm in ex.
RIC 421 mm appears to be palm branch then officina mark followed by SISC with a dot, though the initial portion is obscured.
RCV 19171
AE 3, 19 mm, 2.68 g, 11h, Sirmium mint c. 362-363
mm, BSIRM
RIC 108, RCV 19172
AE 3; 20 mm, 2.96 g, 12h, Constantinople mint c. 362-363
mm branches on either side CONSPA
RIC 166 (Scarce), RCV 19176
AE 3; 20 mm, 3.29 g, 11h, Heraclea mint c. CE 362-363
No Spear variety****
mm HERACL*A
RIC 106, RCV 19174
AE 3; 19 mm, 2.66 g, 11h, Antioch mint c. CE 362-363
mm ANTΔ
RIC 219 (Rare), RCV 19181
AE 3; 20 mm, 3.57 g, 5h, Antioch mint c. CE 362-363
mm branches on either side of SMANTΓ
RIC 221 (Rare), RCV 19182