Constantine III, AV Solidus. 22mm, Lyons, 407-411 AD, 4.41 g. 

D N CONSTANTINVS P F AVG, rosette-diademed, draped, cuirassed bust right.
VICTORIA AAAVGGGG, Emperor standing right, holding standard 
and Victory on globe, spurning captive with left foot; L–D
across fields. 
Mintmark CONOB. 
RIC 1506. C 5. LRC 793. Depeyrot 22/3.

Very rare. 
With permission of Numismatica Ars Classica NAC AG