BMCRE 11, RSC 87
Rome Mint, 69 - 70 A.D.
Obv - Head of Vespasian, laureate, r.
Rev - Mars, helmeted, naked except for cloak round waist, advancing r., holding spear in r., holding spear in r. hand, and aquila over l. shoulder inl.
Mars represented here may be a reference to the recent Judaean War or the Civil War.
What is interesting about this coin is the Galba like portrait on the obverse. Before Vespasian's arrival in Rome, the engravers must have been really struggling to come up with a portrait of him, hence the reworked Galba die