Ebay sale: Dr Lanz, Germany.

Constantius II  (337-350 AD). Centenionalis (4,6 g. - 21 mm)

Obv: D N CONSTANTIVS PF AVG, pearl diademed, draped, 
cuirassed bust right, holding globe. A behind bust.

Rev: FEL TEMP RE-PARATIO, soldier standing left, spearing
fallen horseman who is wearing Phrygian helmet, kneeling 
right, hands raised in supplication.
star above A in left field.
Mintmark RP.

RIC VIII 174 (reverse) / 175 (obverse) mule.

Sold on ebay for EUR 52.07, 22nd Feb 2010.

With permission of Auctions Dr. Lanz, Munich. Feb. 2010.