Hi Marcelo. Obviously, I don't have any knowledge of Nirvana, I am just trying to follow along. Of the two you just posted, in the first one the vertical backbone trail off and the start of the arching loop suggest the order to me. The second is not a very good image but it appears there is ink cross over at the bottom of the loop showing the vertical backbone present first. In the original questioned item the ink shows the order. I made an image to show what I think is being suggested. They are shown original questioned item first, then the two you just posted in the order you posted them. Click for full image:
Thank you Eric for comparison photos, it seems clearer.
Thank you all for submitting your opinion on my post.
Unfortunately, as with signed nirvana, we are never sure of their authenticity or not.