Many special order Ballard rifles often defy categorizing. Without knowing how the gun was originally ordered, it's often a case of adding up most of the features, and then deciding if Marlin started out with a particular model, and what they changed to get to the point of filling the special order. 
I've got a couple that I still am unsure what category they would have fitted into, and just gave up trying to categorize them. If you look in the back of Dutcher's book he shows a number of special order Ballards that he discusses what they might have started from, but it's still just a guess today.