Severus Alexander, 222-235 AD, bronze of 31.5 mm, 15.41 grams. 
  Struck at the mint of Antioch in Syria.
  Obverse: Laureate bust right.
  Reverse: Tyche, River God, Seleucus Nicator, Crowning Tyche of 
  Antioch.
  Reference: Butcher 488.
  Quite an interesting type.