I just got another NES test station today in the mail, this is the 4th or 5th one I have had now.  While cleaning it up for trade/sale, I opened it up.  To my suprise I found something I hadn't seen before.  All the other ones I had had this on the inside (to lazy to upload my pic again, so here is the link to it)
http://www.nintendoage.com/index.cfm?FuseAction=NES.Fullsize&Type=Cart&Image=416...

Well this one has a white version cart instead of the black version one.  I thought there was only 1 production run of test stations, but apparently there was at least 2 now.  Pretty interesting IMO.  Thoughts??

All the system test carts I have seen are 1.1.  But I havne't taken the black version apart yet.  I will try to get that done in the next day or two.  It isn't very much fun taking the testers apart and mine is kinda hard to get too now anyways.  I will let you know for sure soon though.

NGD that's a cool find man, i've never seen a white one till now. Dang you had a lot pass your hands, cool you look in to them.