IMP XXXXII COS XVII P P (type I, B) (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.
Marks
Photo of a coin sold on 28 November 2015 by Roma Numismatic Group, lot 762, link to the sale: https://www.acsearch.info/search.html?id=2776008, link to their website: http://www.romanumismatics.com/. Another copy sharing the same dies, sold on the same sale, lot 764: https://www.acsearch.info/search.html?id=2776010. Two other copies sharing the same dies, sold on 09 January 2016 by Roma Numismatics Limited, E-Sale 23, lot 653, link to the sale: https://www.acsearch.info/search.html?id=2843468, link to their website: https://www.romanumismatics.com/. Link to the sale of the the lot 654: https://www.acsearch.info/search.html?id=2843469. A coin sharing the same dies sold on 20 November 2016 by Numismatik Naumann, Auction 48, lot 671, link to the sale: https://www.acsearch.info/search.html?id=3483221. These are a large number of examples sold over a short period of time, sharing the same dies, centering and flan shape, which raises questions about the authenticity of the coins.
Mark CONOB.
Variant with IIIP instead of IMP. Similar to AYC #22 degen 3, RIC 324 but with classic styling.
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.
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.