Watch List notes:

Postumus, Romano-Gallic Emperor, 260-269. Antoninianus (Billon, 21 mm, 3.48 g, 7 h), Cologne, first half of 268. IMP C POSTVMVS P F AVG Radiate, draped and cuirassed bust of Postumus to right. Rev. IOVI CONSERVATORI Jupiter standing front, head to left, holding thunderbolt in his right hand and long scepter in his left; at feet to left, small figure standing right, extending arms towards Jupiter. AGK (corr.) 35. Cunetio -. Elmer -. RIC 308. Extremely rare. The obverse a bit weak, otherwise, extremely fine.