Postumus Antoninianus, struck 266 AD at Cologne mint.
Obv: IMP C POSTVMVS P F AVG, radiate, draped and cuirassed bust right.
Rev: DIANAE LVCIFERE, Diana walking right, holding long-handled torch, at feet, small stag running right.
4,03 g, 20 mm.
RIC 299; Elmer 397; AGK (corr.) 12; Cunetio 2431;
Very rare type, showing a small stag.