Marx pressed steel tank, wooden wheels and turning turret???? What is it and where did it come from??

Ok guys acquired this marx pressed steel tank with wooden wheels and a hollow inside with turning turret on top.  The question is where did a tank like this originate from??  Not sure but there are two holes (one on each side) that have been punched out and not sure about that is it some type of mount??  Measures a little over 4" long.  The man I bought it from said it came with a train set but ive never seen a tank like this with a train set before and ive seen a lot of marx tank variations out there.  He said that the man he bought the set from told him that the tank did come with the set but again I have no way of proving that but that's what ive been told.  Just curious if anyone else has run across this tank before or knows anymore about it.