I have a site on Byzantine coins of the Cherson mint in Crimea (the north part of the Black Sea). http://esty.ancients.info/Cherson/ Nothing much had changed since 2012 until today. I added a number of rare 5th century coins including this one: Theodosius II, 402-450. 22-21 mm. RIC X 460 "R3" (extremely rare) "? 437" Two emperors standing on either side of long cross CONCORDIA AGV [sic] CONS in exergue, suggesting the mint of Constantinople, but these coins are found only near Cherson. If they were minted in Constantinople, the whole output was immediately shipped to Crimea. When RIC X was published in 1994 scholars from western Europe knew very little about these types which are from behind the Iron Curtain. The RIC rarities "R3" and "R4" mean only a few examples were known to Kent. Now the number of known examples has exploded, but both types are still rare in conditions as good as these. The page has a "What's New?" line near the top and you can see new coins of Leo I, Theodosius II, Valentinian III, and city coins from Cherson before it became an imperial mint.
