Watch List notes:

Postumus - Barbarous Imitation. Romano-Gallic Emperor, A.D. 260-269. AE double sestertius (27.3 mm, 13.79 g, 11 h). Barbarous mint - "Danubian Celts". Barbarous legend, radiate and draped bust right / Barbarous PAX AVG, Pax advancing left, holding branch and scepter. cf. RIC 218. aVF. 

Ex Elwood Rafn collection.