AR Denarius (20mm, 3.11g, 6h). Rome mint, struck Jan 1 - c. Sept 15, 87 (First Issue).
IMP CAESAR DOMIT AVG GERM P M TR P VI, head laureate right; IMP XIIII COS XIII CENS P P P, Flavian Minerva cult statue standing left, with thunderbolt and spear, shield at her left side (M3).
RIC 509 (C), BMC 106, RSC 215a.
Ex Moremoth (Sydenheim's granddaughter apparently, which is interesting, but these coins aren't from his own personal collection or anything, but were purchased in Germany, darn it), ex somewhere in Germany.