Round-backed throne variation.
AR Denarius (21mm, 3.48g, 6h). Rome mint, undated Commemorative Issue, but struck 82-83.
IMP CAES DOMITIANVS AVG P M, head laureate right; SALVS AVGVST (inwardly, clockwise from low left), Salus seated left on round-backed throne, with corn ears and poppy.
RIC 145 (R), BMC 54, RSC 412.
Ex CNG, ex Group SGF.
Analogous to the screaming eagle version of RIC 144, RIC 144a, with this variety I am drawing the distinction between round-backed and square-backed thrones.
More about this coin in the Archives on this website, June 3, 2018, "Domitian Denarii RIC 144 and 145: Two numbers, four varieties."