This coin is not in RIC, but is listed in Bastien
Diocletian
A.D. 294
Ӕ Antoninianus
23x24mm 3.5gm
DIOCLETIANVS•P•F•AVG; Radiate, draped and cuirassed bust right, seen from rear.
SALVS AVGG; Salus standing right, feeding snake from patera.
In ex. A
RIC V Lugdunum --; Bastien 624 (2 ex.)