Valerian I with Gallienus and Valerianus II, AE of Nicomedia, Bithynia. 10.14 g. 

AVT OVALERIANOS GALHNOS OVALERIANOS KAISAR SEB BB, radiate,
draped and cuirassed busts of Valerian I and Gallienus facing
each other, draped, cuirassed bust of Valerian II between them. 
NIKOMHDEWN TRIS NEWKORWN, three prize crowns, the two outer
ones holding one palm branch, the middle one holding two palm
branches. 

RecGen 410 var; BMC 72 var (obv. legend).

Courtesy of Helios Auction 5, June 2011