Maximinus II AE Follis. 

Obv: IMP MAXIMINVS PF AVG, laureate head right 
Rev: IOVI C-ONS-E-RVATORI, Jupiter facing with head left, chlamys hanging 
 from left shoulder, holding thunderbolt, leaning on sceptre, eagle with 
 wreath left. 
Mintmark SIS; right field: Gamma. 

RIC VI Siscia 222b var (unlisted reverse break)

Dane's collection, August, 2006.