Watch List notes:

Postumus (The Gallic Empire, 260-269), Dupondius, Lugdunum, AD 260-269; AE (g 18,48; mm 33; h 6); IMP C M CASS LAT POSTVMVS P F AVG, radiate and draped bust r., Rv. HERC DEVS - ONIENSI, Hercules standing r., holding club, bow and lion's skin. RIC 200; C 88.
Large flan. Dark patina. Good very fine.