Ancient Roman silver Antoninianus of emperor Gordian III / Liberalitas

This is an ancient Roman silver Antoninianus of Emperor Gordian III, minted at Rome in 241 AD 

Obverse:  IMP GORDIANVS PIVS FEL AVG "Emperor Gordianus, Pious and Happy August" radiate draped bust left

Reverse: LIBERALITAS AVG IIII "Fourth liberality of the emperor (Augustus)" Liberalitas, draped, standing front, head left, holding abacus in right hand and double cornucopiae in left hand.

CULTURE: ROMAN

DENOMINATION: Antoninianus = 2 Denarii

MATERIAL: Silver 

DATE: 238 - 244 AD (minted at Rome in 241 AD)

SIZE: 20.2mm diameter

WEIGHT: 4.81 grams

ATTRIBUTION:  RIC IV.3# 137, OCRE# ric.4.gor_iii.137

PROVENANCE: Formerly in a  private collection. Budapest, Hungary.