POSTUMUS, Gallic Empire 
AD 260-269
Billon Antoninianus. 3.0g, 21.7mm
MINTED: Trier mint, 3rd emission, 1st phase, AD 263-265
REF: RIC V 75; Mairat 65-9
OBVERSE: IMP C POSTVMVS P F AVG, radiate, draped and cuirassed bust right.
REVERSE: MONETA AVG, Moneta standing left, holding scales and cornucopia.

Notes:
Dark gray toning.  Struck on an interesting irregular flan.  
 
Historical Notes:
Postumus was one of the most successful of the 3rd century usurpers, establishing the break-away Gallic Empire.  He was the imperial legate of Lower Germany under Emperor Valerian, and when the latter was defeated and captured by the Persians, Postumus's troops proclaimed him Augustus against Valerian's son and co-ruler, Gallienus.  Gallienus's repeated attempts to crush Postumus's revolt never succeeded, and from 260 to 269, Postumus ruled over Gaul, Germany, Raetia, Britannia and Hispania.  Interestingly, the coins he struck were often of higher quality and better style than those of Gallienus.