Someone pointed out to me that this coin has a helmet type not usually seen on Probus coins. The normal type is an Attic helmet, see the second picture for a typical example. The first coin has a different visor. On probus.net the site owner calls it a pseudo-Attic helmet.
Probus
A.D. 276- 282
Ӕ Antoninianus
20x23mm 3.6g
IMP C M AVR PROBVS P F AVG; Radiate helmet, cuirassed bust left with spear over right shoulder and shield on left.
VIRTVS PROBI AVG; Mars walking right, holding spear and trophy.
In ex. XXIV
RIC Vi Siscia 810
