à reclasser (type II, B) (441 / 450) Comitatus mint
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 the 30/01/2016 by Roma Numismatics Limited, E-Sale 24, lot 705, link to the sale: https://www.acsearch.info/search.html?id=2926263, link to their website: http://www.romanumismatics.com/. Coin resold the 28/07/2017 by Heritage Auctions, Auction 231730, lot 64101, link to the sale and their website: https://coins.ha.com/itm/ancients/roman-imperial/ancients-theodosius-ii-ad-402-450-av-solidus-445-gm-ngc-ms-5-5-4-5/a/231730-64101.s?type=acsearch231730.
Variant with modified letter M of COMOB, probably an old die with the CONOB mark. The letter M of the word IMP on this copy may also be corrected. This coin has a barbaric style with slightly degenerate lettering.
Another copy with different dies and the same features has been sold the 15/06/2017 by Heritage Auctions, Auction 231724, lot 63097 and resold the 31/08/2017, Auction 231735, lot 65096, link to the sale and their website: https://coins.ha.com/itm/ancients/roman-imperial/ancients-theodosius-ii-ad-402-450-av-solidus-448-gm-ngc-ms-5-5-4-5-wavy-flan/a/231724-63097.s?type=acsearch231724. The coin appears to show (the low magnification of the photo makes it difficult to be certain) a mint mark with the letter M modified with a curve at the bottom.
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.