Mine are no different on the base; the number is different, but otherwise I really can't see any differences -- no extra etching on it.
But, I do see the differences as shown in the pic on the first page - mainly, the one that really stands out, is the distance of the stars from the helmet:
I set them up as those on the 1st page are shown, with the one that I think may be authentic on the right -- the stars on each side of the helmet are further from the helmet, than the stars on the Achilles on the left.
I do feel a slight difference in the threads, though I've never noticed particularly which I was using, but one of them, when I take the cap off for a refill, is a freaking monster to get threaded back on, takes forever to get it started; the other goes on very easily; I've also noticed just a *slight* difference in the threads when I put the tanks on; with one of them, there's a distinct feel, almost a "click" or "chunk" if you will, when it's fully threaded, like it's found its home. But as I said, I've never really paid much attention to which I was using when I felt these things. There may be just the *tiniest* difference in how they vape, but it's so extremely slight, I could never tell from the vape which is which -- which tells me that the cloners did a bang-up job on the clone, with only the slight raggedness of the cap's threads and the too-close stars to tell them apart.
Andria
But, I do see the differences as shown in the pic on the first page - mainly, the one that really stands out, is the distance of the stars from the helmet:
I set them up as those on the 1st page are shown, with the one that I think may be authentic on the right -- the stars on each side of the helmet are further from the helmet, than the stars on the Achilles on the left.
I do feel a slight difference in the threads, though I've never noticed particularly which I was using, but one of them, when I take the cap off for a refill, is a freaking monster to get threaded back on, takes forever to get it started; the other goes on very easily; I've also noticed just a *slight* difference in the threads when I put the tanks on; with one of them, there's a distinct feel, almost a "click" or "chunk" if you will, when it's fully threaded, like it's found its home. But as I said, I've never really paid much attention to which I was using when I felt these things. There may be just the *tiniest* difference in how they vape, but it's so extremely slight, I could never tell from the vape which is which -- which tells me that the cloners did a bang-up job on the clone, with only the slight raggedness of the cap's threads and the too-close stars to tell them apart.
Andria