wagon gear?

Can anyone on here tell me what brand wagon box & gear is pictured here?  Owner can not see any id tag on the running gear.  If its an Electric or Allis gear, what do I look for to tell the difference?  It has the front tie rods like the AC 8-10 ton gear.  He said that it had 6 bolt 15" wheels and that the tip tops on the box were metal instead of wood.  Tires are all dry rotted, but still up.  Even if its not Allis, whats it worth?

Looks like a 10 ton electric looks like it has heavier hubs than 6 bolt. If the box doesn't have rust blisters $1000 range.

Thanks for the posts.  I went and looked at it this evening.  It is a New Idea wagon running gear.  I still have not figured out what brand made the 250 bu gravity box - maybe New Idea as well??  It does have an interesting metal tip-top extension that is omitted in the front.  Maybe it was omitted to enabled an ear corn picker's elevator more room while the wagon was trailing through the field behind it??  I managed to secure this one pic before my digital camera's battery failed.  It has 8 bolt hubs with 12.5L x 16 tires so I'm thinking its at least an 8 ton.  Maybe someone on here will know more from this id tag picture?  The serial number has an 8 in it?  Even though it was not AC, I still liked its character and so I bought it.  Look out wire brush & sand blaster :)