Probus Bronze Antoninianus 276-282AD Medusa on shield extremely rare

Probus Bronze Antoninianus 276-282AD Medusa head on shield, extremely rare.

21mm, 3.70g

Radiate bust of Probus left, spear over right shoulder and shield held on left, decorated with a central Medusa head or Aegis. VIRTVS PROBI AVG

Figure standing holding two sceptres. FIDES MILITVM, III in exergue

After much research we could not find this bust variety recorded, perhaps we were looking in the wrong place but if it is then it must be extremely rare with no more than a few known examples.

ex Cotswold Collection.