Titus, after conversing with Jack, I took another look at the pictures, I have seen another model that had some of the same attributes as yours. This other tractor was in the same 2700's and about 40-50 numbers below yours. HIs too had JBI and JBII parts. Note your left hand box has only 2 handles not 3 like the typical JBII. Also note the front of your tractor has a place that looks like for one grill protector not two. This tractor was set up the same way. Again 1 protector is typical of a JBI. The 5 bolt hubs are typical of the JBII. I would be real curious to your parking brake set up- the pictures do not show it, but I suspect it is like a JBI with the parking brake pull knob on the left side by your leg. Not sure about the front axles set up- I think it is the JBII set up but not 100% sure. Maybe Brian can confirm it either way.
This other tractor too had the scratches/cleaning up area around the serial number. So your previous owner did not do this, I think BH did this. Maybe they took a JBI and changed it to a JBII to fill an order??? This differences, to me, make your tractor that much more interesting. Congrats on a nice find!
Scott, I believe your right on the ID tag. If you enlarge Pete's tag, you can just make out most of the "J" in black print that they didn't remove, and if you look at my tag, it's the same tag.
Both of my grills only have one protector.
The front axle looks to be set back as my JB II is and not out front like my JB I