Decimus Caelius Calvinus Balbinus Pius Augustus was Roman Emperor with Pupienus for three months in 238, the Year of the Six Emperors.
Not much is known about Balbinus before his elevation to emperor. When the Gordians were proclaimed Emperors in Africa, the Senate appointed a committee of twenty men, including Balbinus, to co-ordinate operations against Maximinus Thrax. On the news of the Gordians' defeat, the Senate voted Pupienus and Balbinus as co-emperors on 22 April 238, though they were soon forced to co-opt the child Gordian III as a colleague.
Balbinus and Pupienus didn't work well together, and they were soon living in different parts of the Imperial palace, where they were later assassinated by disaffected elements of the Praetorian Guard, with Balbinus' death occurring on 29 July 238.
Not much is known about Balbinus before his elevation to emperor. When the Gordians were proclaimed Emperors in Africa, the Senate appointed a committee of twenty men, including Balbinus, to co-ordinate operations against Maximinus Thrax. On the news of the Gordians' defeat, the Senate voted Pupienus and Balbinus as co-emperors on 22 April 238, though they were soon forced to co-opt the child Gordian III as a colleague.
Balbinus and Pupienus didn't work well together, and they were soon living in different parts of the Imperial palace, where they were later assassinated by disaffected elements of the Praetorian Guard, with Balbinus' death occurring on 29 July 238.

(1)
Balbinus
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An
AR
Antoninianus
struck AD 238
in
Rome
Obverse: IMP CAES D CAEL BALBINVS AVG, radiate, draped and cuirassed bust right
Reverse: PIETAS MVTVA AVGG, clasped hands
Diameter:
22 mm
Die Orientation: 7 H
Weight: 4.75 g
Die Orientation: 7 H
Weight: 4.75 g
No notes for this coin
RIC 12; RSC 17
(2)
Balbinus

Obverse: IMP C D CAEL BALBINVS AVG, Bust of Balbinus facing right, wearing laurel wreath, cuirass, and drapery
Reverse: PROVIDENTIA DEORVM, Providentia standing facing, head left, holding wand over globe and cornucopia
Diameter:
20 mm
Die Orientation: 12 H
Weight: 2.44 g
Die Orientation: 12 H
Weight: 2.44 g
Co-Augustus with Pupienus from April 22nd until they were both assassinated on July 29th.
RIC IV Balbinus 7