Johannes, 20 November 423 - May 425 A.D. AE4, aF, Rome mint, 1.399g.

obverse D N IOHAN-NES P F AVG, pearl-diademed, draped and cuirassed bust right
reverse VICTOR-IA AVGG, Victory advancing left holding 
wreath and palm, T in left field, RM in ex

RIC X 1910, SRCV 4287 var
very rare (R4); $200.00

Forvm Ancient Coins, online coin shop. Item 27930.