Constantius III. AV Solidus, AD 421 AD. 21 mm, 4.43 g. Ravenna mint. 

D N CONSTAN-TIVS P F AVG, laurel and rosette-diademed, draped and cuirassed bust right.
VICTORI-A AVGGG, Constantius standing right, holding standard and Victory on globe, spurning captive.
R-V across fields, 
Mintmark COMOB. 

RIC X 1325; DOCLR 815; Depeyrot 7/4. 

With permission of Leu Numismatik AG auction 7, Lot 1844, Oct. 2020
Extremely rare