IMP XXXXII COS XVII P P (type I, A) (441 / 450)

Bust of Theodosius II facing, cuirassed, wearing a helmet with crest and a pearl diadem. Holding a spear passing behind his head with the right hand and a decorated shield with a horseman slaying an enemy, with the left hand.

Constantinople seated left on a throne, holding a spear with the left hand and a globe surmounted by a cross with the right hand. A shield behind the throne and a star in the field to the left.

Photo of a coin sold the 07/04/2016 by Roma Numismatics Limited, Auction 11, lot 904, link to the sale: https://www.acsearch.info/search.html?id=3020694, link to their website: https://www.romanumismatics.com/.

Mark CONOB.

Type I: with mark CONOB or COMOB (CONOB here) and the reverse legend usually ending before the shield. No punctuation on legend either side. A square throne, the right leg as a triangular protuberance, stiff drapery and vertical scepter. This corresponds to type III of RIC X. Var A is the same as RIC X: elongated and long shield.

Variant with INP instead of IMP on the reverse. Another copy sharing the same reverse die shows better that the letter N of INP on the reverse, is indeed an N and not a poorly executed M as the copy illustrating this AYC #21 var, RIC 323 might suggest. A die break on the letter N of CONOB is visible on both copies. Here is the coin: 

Photo of a coin sold the 05/05/2022 by Heritage Auctions, Auction 3099, lot 31393, link to the sale: https://www.acsearch.info/search.html?id=9406044, link to their website: https://coins.ha.com/itm/1/1/1/a/3099-31393.s?type=acsearch3099.

Yet antoher copy with different dies:

Photo of a coin sold the 28/06/2014 by Roma Numismatics Limited, E-Sale 9, lot 668, link to the sale: https://www.acsearch.info/search.html?id=2068086, link to their website: http://www.romanumismatics.com/.

See AYC #21, RIC 323: https://www.all-your-coins.com/en/archives-anciennes/romaines-imperiales/imp-xxxxii-cos-xvii-p-p-type-i-a-441-450, for the commentary explaining the entire coinage.