Postumus, AV aureus. AD 26-269. 5.97 g. 

POSTVMVS PIVS FELIX AVG, jugate, laureate heads of Postumus
and Hercules right.
CLARITAS AVG, jugate busts right of Sol, radiate and
draped, and Luna, on crescent with small crescent on
her head. 

RIC V-2, 260; Schulte 115; Calicó 3712. 
Very rare. 

With permission of Hess-Divo AG - Auction 327, Lot 139, Oct 2014