IMP XXXXII COS XVII P P (type II, B) (441 / 450)
OOO - 
T(P ou V?)PPAG 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.
PTXXXX 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 13 January 2016 by Classical Numismatic Group, Triton XXIX, lot 960, link to the sale: https://www.acsearch.info/search.html?id=15691866, link to their website: https://www.cngcoins.com/.
Imitation of AYC #34 a, RIC 285. The coin is of heavy weight, surprising for a counterfeit that usually seeks to gain value by exchanging a lighter coin. The Delta officina is well copied. This coin is interesting because it shows what barbaric imitations really are (Germanic imitation in this case) compared to the "degenerate" coins which I have classified as official strikes because they still have a style and lettering much closer to the official coins of the Constantinople mint or the probably itinerant mint striking for that same mint.
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.