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.

Photo of a coin sold the 14/01/2015 by Classical Numismatic Group, Electronic Auction 342, lot 803, link to the sale: https://www.acsearch.info/search.html?id=3316958, link to their website: https://www.cngcoins.com/. From the collection of Dr. Wolfgang Krämer. Ex G. Hirsch XXXIV, 21/02/1963, lot 1138.

Variant with the letter M of IMP in the form of a monogram. This could be a mix-up by the engraver between the letter M and a monogram he saw, or a faulty engraving stroke, or even a die break (unlikely). This shape also resembles the monogram visible on certain strikes in the name of Zeno, such as on this coin:

Photo of a coin sold the 10/04/2014 by Heritage Auctions, Auction 3032, lot 23750, link to the sale: https://www.acsearch.info/search.html?id=1914265, link to their website: https://www.ha.com/. It is the coin illustrating the AYC #34, RIC 3632 for Zeno.

Some Greek coins also display similar monograms.

Type I: with mark CONOB or COMOB (COMOB here) and the reverse legend usually ending before the shield. No punctuation on legend on 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 B is the same as RIC X: smaller and rounder 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.