Watch List notes:

Probus Æ Antoninianus. Siscia, AD 280. IMP C PROBVS P F AVG, radiate and cuirassed bust right / PAX AVG, Pax standing left, holding olive branch and transverse sceptre; Q in right field; XXI in exergue. RIC 706. 3.83g, 23mm, 7h. Good Extremely Fine. Near complete silvering.