Are these Milo Baughman or Florence Knoll chairs  

Chairs
They look a bit like william plunkett but I cant see the bases properly.

I'd plump
for Plunkett too

ok, pics uploaded
uploaded, please see thread below

I uploaded two more pics of...
I uploaded two more pics of the base, please let me know what you think, thanks
http://www.flickr.com/photos/43905676@N04/4038184176/http://www.flickr.com/photos/43905676@N04/4037432787/

OK
Not the same as the Plunkett chairs I posted
Where in the world are the chairs ? (always helps with identification)
Also please put the picture links in the 'associated web images' boxes- then they appear in your post.
Best
Robert

They are in PA, but from what...
They are in PA, but from what the seller told me they were purchased in the DC area back in the 60's/70's. Regarding the pics, I added them in the designated section but they did not appear.
http://www.flickr.com/photos/43905676@N04/4037838672

great chairs........
is the metal may be aluminum? do the foot pads unscrew?
if so they may possibly be by california designer george kasparian.

Yes, the footpads do unscrew ...
Yes, the footpads do unscrew and yes I am almost 100% sure these are aluminum, thanks for the info.

I did not have much luck...
I did not have much luck finding information about the designer other than this ebay listing http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110397611017

yes, the footpads do...
yes, the footpads do unscrew, thanks

dude, those are sweet chairs............
i bet the feet are ribbed on their sides and might be slightly rounded on the bottom........am i right?
money says their george kasparian.
george's furniture was mostly marketed as contract office furniture.
i've had three labeled benches over the years which i purchased at used office furniture shops in california. they had the same production details your groovy chairs have. thir are ads in vintage "interiors" and "furniture forum" for george kasparian and kasparian originals but not much else unfortunately.
a big shot dealer had some pieces that he billed as rare and important california design which also meant they were expensive.
i love their sometimes minimalist "Laverne" like look.
i'll try to see if i could find an ad in Inertiors for george kasparian........

Arts and Architecture magazines
from the mid to late 60s include many ads for Kasparian and I've see them in vintage issues of Interiors also. Those chairs look to me like late 60s, or early to mid 70's pieces. I think you may be on the right track. If they were stainless steel, I'd suggest that Cumberland might also be a possibility.

egads !
......thats some fugly upholstery ma friend.....

Thank you for helping identif...
Thank you for helping identify these chairs, I appreciate it.