Constantius I AE Antoninianus
from Antiochia AD 293, 4.45g, 22.4mm
obv. FL VAL CONSTANTIVS NOB CAES, draped, cuirassed bust,    
seen from behind, radiate head r.
rev. IOVI ET HERCVLI CONS CAES, Jupiter standing r., 
holding globe and sceptre, facing Hercules standing 
l., holding victory, club and lion's skin.
field: dot above S 
exergue: XXI
RIC V/2, 673 var., unlisted in RIC, about EF

This type 'dot above officina mark' AD 293 from Antiochia  is known for Diocletian
(officinae 1/2, 4/5, 7) and  Galerius (officina 3 = Gamma) and was expected for
Constantius too (officina 6 = S), but not yet known. This seems to be the first coin.
(Courtesy Curtis Clay). 

Contributed by Jochen, July, 2004.