Bronze AE23, 23mm, 7.46gm, issued AD 244.
Obv: IMP GORDIANVS PIVS FEL AVG, Radiate, draped and cuirassed bust facing right.
Rev: PMS COL VIM (AN IIII in ex.), Moesia standing between bull and lion.
References: Sear 3642.
The Bull and Lion were the emblems of the VII and IV legions that were stationed in Moesia. The colony of Viminacium was founded in 238/9 AD, and this coin was issued in its fourth year (AN IIII).