IMP XXXXII COS XVII P P (type II, 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 on 29 July 2015 by Classical Numismatic Group, Electronic Auction 356, lot 618, link to the sale: https://www.acsearch.info/search.html?id=3328131, link to their website: https://www.cngcoins.com/.

Variant with the letter M of the COMOB mark engraved above an N. The letter M in IMP is not a modified N, even though the two middle legs cross. This is due to an engraving method that inscribes the lines one after the other without stopping precisely at the junction. This detail is noticeable throughout the coinage. It seems to indicate a confusion between the letters N and M, probably reinforced by the changes in mint marks from CONOB to COMOB. The letter M in the mint mark, however, is actually modified, as the leg of the former letter N extends to its end.

Here is another coin with the same dies: 

Photo of a coin sold on 07 November 2019 by Roma Numismatics Limited, E-Sale 63, lot 1078, link to the sale: https://www.acsearch.info/search.html?id=6458960, link to their website: http://www.romanumismatics.com/.

See also the coin illustrated in the commentary on AYC #31 var, RIC 285, which could be classified here after further study with the coin in hand.

Type II: with the mark CONOB or COMOB (COMOB here) and the reverse legend generally ending at the level of the shield. No legend punctuation on the reverse. A square, upright throne, the right knee is rounded, natural drapery, and a vertical scepter. This corresponds to Type I of RIC X. Variant B is the same as RIC X: a smaller, rounder shield.