A new interpretation
AR Denarius (19mm, 3.58g, 7h). Rome mint, struck noon, Sept 18, 95 - noon, Sept 18, 96, but probably shortly before Domitian's death by assassination, gmojm.
IMP CAES DOMIT AVG GERM P M TR P XV, head laureate right; IMP XXII COS XVII CENS P P P, altar of Mars Ultor with tapestries of Twins facing, flanked by two of the recovered lost aquilae, each guarded by a hooded cobra.
RIC 784 (R2), BMC, p.344+, RSC 296.
Ex Stack's Bowers, ex Freeman & Sear, ex Helios.
NGC certified, #4683674-024, AU.
It is my opinion that Domitian struck this coin as a warning of divine retribution against his unknown assassins.