Herman Miller Aeron, real or fake? Please help!  

Hi
It looks right, albeit dirty.
I was not aware that there are Aeron knockoffs.
The chair should be stamped Herman Miller at the top of the back rest, on the back side (the small rectangle in your photo).

.
Does anyone make a knock-off Aeron chair?

Thank you for the advice!
It looks like real deal !
The dust can be cleaned, but its a quality chair and for 100$ sounds too good to be true! I will have to come up and have a look at the back of the chair 😉
Once again thank you for your time and help 😉
best wishes
D

Aeron Knockoff
ChairLove,
Google for Russell Executive Mesh Chair, but I think there are more around!

Authentic
This looks authentic to me. I've seen chairs "inspired by" or "Aeron-style" but nothing that would be mistaken for an actual Aeron. I am writing this from my polished aluminum Aeron!

It's Herman Miller.
And appears to be a size "B". Reach under the rear top-back (behind the mesh..under the top most plastic cross member, and count how many bumps you have hiding. You'll either have 1, 2, or 3..meaning size a/b/c. Mine is a "b"..I have 2 bumps.
Best,
Aunt Two Bump