Tacitus, 275-276. Antoninianus (Silvered bronze, 21 mm, 3.92 g), brockage mint error, Cyzicus, November–December 275. Incuse of reverse. Rev. CONSERVATOR MILITVM / Γ / KA Tacitus standing left, holding long scepter in his left hand, receiving globe from Mars standing right in military attire and holding spear in his left hand. RIC V online 3993. A very rare and interesting reverse brockage. Minor porosity on the obverse, otherwise, very fine.