Possible Super Enchi and/or Toffino.

This guy is really nice, but he does have some small scabs/rub marks on either side of the underside of his chin.  I've seen this often in ball pythons raised in metal racks.  It is from rubbing and prodding to find a way out of the tub.  Luckily, it doesn't seem to ever get worse and poses no health issues for the snake.  The marks may at least partially go away after a few sheds if it discontinues the rubbing behavior.  This snake is otherwise perfect and I guarantee the rub marks will not cause any further issues.  I've discounted his price from $350 down to $200 because of the imperfection. Photos are available to serious buyers.  Please inquire.