Any difference in atari 810 disk field exerciser carts

[Scooter83]

I have 2 carts of the 810 field exerciser carts.

 

One is the typed label with the FD part number on it. And I just ordered one that had a hand written 810 Rev 0 /Burn. That one I'm hearing might have been from an employee. Talking to the seller there were a few different builds of the 810 exerciser and was wondering if there was any difference in the 2. I'm on the road and can't plug my current in at home but I posted pictures on the atariage facebook page of the 2 carts and the boot screen of the Rev 0 cart. Does anyone have a screen shot of the cart with FD part number on it. Greatly appreciated. I'd add pictures here but can't seem to do it on the mobile phone

[AtariGeezer]

Same thing... http://www.atarimax.com/jindroush.atari.org/acdpda.html

rbgamehunter might be making their own copies ?