IMP XXXXII COS XVII P P (type II, 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.
Marks
Photo of a coin sold on 17 July 2022 by Savoca Numismatik, 138th Silver Auction, lot 288, link to the sale: https://www.acsearch.info/search.html?id=9733856, link to their website: https://www.savoca-coins.com/. Resold on 18 September 2022 by Savoca Numismatik, 143th Silver Auction, lot 370 and on 20 November 2022 by this same auction house, 148th Silver Auction, lot 677.
Variant with the word INP instead of IMP. The word INP on the reverse might suggest IMP because there appears to be a gap with the last leg; this is probably a stroke, even though it's possible that the line forming the letter M is very close to the right leg and that this stroke is actually the space separating the two lines. But in the latter case, we wouldn't have the bottom of the diagonal line, which is connected to the right leg. This makes it almost undoubtedly a specimen with the INP variant.
Antoher coin sold on 09 February 2019 by Marciniak (formerly Gabinet Numizmatyczny D. Marciniak), Auction 7, lot 2124, link to the sale: https://www.acsearch.info/search.html?id=5663174. The sale house noted the diameter "21.0-21.6 mm". To be confirmed, it is possible that the second line forming the letter M is stuck to the last line on the right, which is very common throughout the series.
One coin sharing the same obverse die as the coin sold by Marciniak (formerly Gabinet Numizmatyczny D. Marciniak) has been sold on 03 June 2004 by Heritage Auctions, Auction 351, lot 12082, link to the sale: https://www.acsearch.info/search.html?id=177073, link to the sale and their website: https://coins.ha.com/itm/ancients/roman/ancients-theodosius-ii-ad-408-450-av-solidus-21-mm-450-g-constantinople-ad-441-450-diademed-hel/a/351-12082.s?type=acsearch351.
These two coins above are mentioned here: https://www.all-your-coins.com/fr/archives-anciennes/romaines-imperiales/imp-xxxxii-cos-xvii-p-p-type-ii-b-441450-1202, because they share the same characteristic as the other coins classified under this number: a re-engraved spearhead.
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.