I don't think anyone has the "true" Dual System forms here yet, the originals are obvious, they have DFS and a series of numbers printed on the form itself ...... anything else is a fake reproduction.
I have 4 different types now, and to be quite honest, by the time I have applied to the form, then held if for what seems like forever, then moved onto the next, I could have done them freehand and buffed them.
They are great for those that are not all that flash with accurate application ..... and if you get them wrong, they can actually take longer (they do take some practise)
They are a fab idea, but I don't have much use for them.
The original forms are the best to use.