Eames Aluminum Chair - Authentic?  

They appear to be authentic.
and Lexol is one of the leather products that I use in my classic cars, but I prefer Leatherique.
Best,
Mark
ps.nice chairs.

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No, it's not authentic.

Can you clarify, Onno?
I'm curious myself. I know these were also produced in license by other firms?

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Have a look at the base, it's different.

They look legit to me. I've...
They look legit to me. I've had softpads with the same stickers. I think perhaps the coupler on the base is simply in an elevated position? Perhaps they were adjusted to a high height or removed from the base and not properly re-attached?

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this looks different too.

HM Says Authentic
Thanks everyone for chiming in.
Here's the message from the HM rep -
"This is an authentic product number for the date. It was for an Executive Aluminum group chair with glides that we no longer produce.
HMHomehmhome@hermanmiller.com
800-646-4400"
You guys have very sharp eyes given the detail of the picture (as onno pointed out). The "coupler" is at it's base position and is elevated via a graphite colored shaft from the aluminum base (the material and finish is similar to the undercarriage). The threaded portion actually starts from that coupler, so at it min height, there is already considerable clearance just from that graphite shaft.
So anyways, reading your comments I got on the phone with a rep at HM. She explained that basically, as this model was specifically designed with glides and not having the additional elevation provided by casters, the design of the base was modified to elevate the level. She referenced a current model with glides and pointed out that they also have a similar extension to account for the reduced height of the glides.
Since they were designed for glides, I have a slight issue with the new casters I've fitted on. The base starting height is already too high, necessitating adjustment of the thread all the way down as low as possible. At this height it is just about sufficient for my desk. I am not certain if I should just got back to glides, as this was the original spirit of the design. It is far less practical in my office though, and I would need something underside to protect it from scratching my wood floors.
I am now trying to decipher what the rest of the numbers mean. From what I read elsewhere, the series of 0's represents the dealer where the product originated from? In this case all zero's means it was ordered from HM directly?

I ran into the same issue whe...
I ran into the same issue when I ordered casters for a soft-pad chair with a non-adjustable 5-point base that originally had glides. Once I installed the glides I realized it was then the proper height for Yao Ming. We really wanted to use this chair as a desk chair as it had great, patinad terracotta leather and would go great in the room. What I ended up doing is grabbing a standard Aluminum Group chair with casters and swapping the bases entirely.
So what I would do is try to find an Aluminum Group chair with destroyed upholstery and the base you want, then swap the base onto the one you posted. It'll end up costing about $100-$400, but in the end it will still be less than buying a brand new high-back chair.

Switching the base
That's not a bad idea, although I'm hoping everything works out as is. The arms were in terrible condition with the lacquer cracking and peeling, and gashes here in there, so I sent those off to Hume for chroming.
I'm working on the rest of the parts by hand and using a buffing bit attached to a corded drill.
Seeing that these are legit, I should probably go back and pick up the rest of them, although not sure what I would do with four or so chairs.
The height is just about right, though, when set low.

1991 Catalog Image
Just got another email from the HM rep - their HMhome customer service is very good!
Here's a scan of the 1991 Catalog that shows the model and options.
Wow, $1,444 in 1991 dollars means that at current prices for new these chairs are actually a resolute bargain in today's currency.

where is the bargain
Arthur_Arthur,
$1,444.00 in 1991 is about $1921.79 in 2013. Based on today's Herman Miller retail pricing ($2169.00) I am not seeing the bargain. This does not in any way mean that they are not attractive "office" chairs.

Inflation
I suppose I was a bit too optimistic with my inflation calculation at 3% compounded annually, which would equate to just under $2,800 in today's currency.
Most of the online inflation calculators price it between $2,200 to $2,400. How did you get your value?