can anyone id these herman miller chairs ?  

a tough one
This is a tough one. I have never seen a Herman Miller chair like this. I do know that for a period Herman Miller distributed some Poul Kjærholm designs. Although these don't look like any of his designs that I have seen, maybe that's a possibility. However, I don't think so. Seems less elegant than his regular work. Or someone put a HM sticker on it randomly.

email
email Herman Miller. Their archive department isnt always the quickest, but I usually get a response in 3-5 days.

ICF Luar Chair by Ross Littell
Hi,
They are the Luar Chair by Ross Littell: http://www.designicons.co.uk/modern_classics/icf_luar_chair.htm
I saw those on eBay as well 😉 Nice chairs!
Thanks,
Ben.
http://www.designicons.co.uk/modern_classics/icf_luar_chair.htm

nice! He also did the "T"...
nice! He also did the "T" chair and years ago I passes up a wall hanging that I think he did. Looked very close or exactly like this:

thanks ben - appreciate the...
thanks ben - appreciate the information