Quintillus, AE antoninianus. Cyzicus mint. 

IMP QVINTILLVS PF AVG, radiate, cuirassed bust left, holding
globe.

IOVI CONSERVATORI, Jupiter standing left, holding thunderbolt 
and sceptre, small figure of emperor at foot.

RIC V-1 Cyzicus 84 var (bust type).
Extremely rare.

With permission of Gorny & Mosch, Oct. 2008 
Auction 170, Lot 2776.
Estimate: 100 Euro.