Watch List notes:

Tacitus, 275-276. Antoninianus (Silvered bronze, 21 mm, 4.95 g, 6 h), Rome, November-December 275. IMP C M CL TACITVS AVG Radiate, draped and cuirassed bust of Tacitus to right. Rev. CLEMENTIA TEMP / XXIZ Mars standing front, head to left, holding olive-branch in his right hand and spear and shield with his left. Cohen 15. RIC 83. RIC online 3510. Sharply struck and mostly silvered. Light deposits on the reverse, otherwise, virtually as struck.