A rare COS X, the emperor draped, and facing left.
AR Denarius (20mm, 3.44g, 5h). Rome mint, struck 84 (Second Issue).
IMP CAES DOMITIANVS AVG GERMANIC, head laureate left, bust draped; P M TR POT III IMP V COS X P P, Flavian Minerva maquette standing left, with thunderbolt and spear, shield at her left side (M3).
RIC 188 (R2), BMC --, RSC --.
Ex Roma Numismatics.
This is the priciest coin I own. It has an amazing iridescence, which appears on the image on my masthead but which I am not yet able to capture with my camera, but I will be working on it assiduously until that happens.
More about this coin in the Archives on this website, May 27, 2018, "Domitian Denarius RIC 188 and Tetradrachm RPC 1976: The coins on the masthead."