Maximinus II, AE follis, Siscia. AD 312. 24 mm, 5.3 g. 

IMP MAXIMINVS PF AVG, laureate head right.
IOVI CONSERVATORI, Jupiter standing left, chlamys hanging from left shoulder, holding thunderbolt and leaning on sceptre, eagle at foot left. 

Digamma in right field. 
Mintmark SIS.

RIC VI Siscia 222b.

Sold by Jesus Vico S.A. Auction 148, Lot 3226, June 2017.