IMP XXXXII COS XVII P P (type II hybride, 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 on 05 January 2014 by Heritage Auctions, Auction 3030, lot 23990, link to the sale: https://www.acsearch.info/search.html?id=1823544, link to the sale and their website: https://coins.ha.com/itm/ancients/roman-imperial/ancients-theodosius-ii-eastern-roman-emperor-ad-402-450-av-solidus-22mm-446-gm-6h-/a/3030-23990.s?type=acsearch3030. 

This coin is a hybrid and a curiosity. The legend, with the THEODO - SIVS break mixed with a Type II reverse, is unique to date. Furthermore, it features a jewel on the diadem, which is not seen on other coins in the series. A dot is present under the letter P on the obverse. Given the break in the legend, resulting in a shorter legend on the right, it is understood that this dot is located in the same place as on other coins with a different break (under the letter A). Die break or attempt to mark a series? See here to analyze other coins sharing this feature (dot or beginning of spear engraving) and other features such as a dot in the throne: https://www.all-your-coins.com/en/archives-anciennes/romaines-imperiales/imp-xxxxii-cos-xvii-p-p-type-ii-b-441450-1205. 

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.