Probus AE Antoninianus. Serdica Mint. IMP C M AVR PROBVS P F AVG, Radiate and cuirassed bust l. wearing imperial mantle and holding eagle tipped scepter / SOLI INVICTO, Sol in spread quadriga, holding whip, K.A.Gamma (no exe. line) in exe. Emission 4 Officina 3. Minted 277 A.D. References RIC 861 Bust Type H. Weight 3.04 gms. Size 25.07mm Contributed by Martin Griffiths, March, 2004.