Maybe you can ask the owner, who runs this site? I know they have a Facebook page, so maybe you can ask those questions there and they will be able to answer. But, I am going to do research myself, this is very intriguing!

I wish I could help you on that one, but I have never purchased those, so I don't know the answer. But, I think you may be able to go online and research the original T205's and see what the original backs looked like.