DN LEO PRPET AG, Leo facing right / SALVS R-PVRLICA, Emperor standing right, holding standard and globe, treading down on a prostrate captive, CON in exergue. 20mm, 4.15 grams. Constantinople or Cherson mint. RIC 660.
This type is a great rarity, with only a handful of other known examples.
These coins were probably minted in Constantinople for circulation in Cherson, in Roman Sarmatia. These large bronze coins are very rare.