is this eames credenza?  

.
I doubt it mate, I'd say its an anonymous piece of high-endish office furniture.
Happy to be corrected.

Is there no markings
at all? None?
The only piece of high quality office furniture that I've seen without any marking was IIL, a small Canadian company that made excellently designed office pieces...and the company was later taken over by Herman Miller.

no marking stamp or label of...
no marking stamp or label of the maker..

Pretty sure it's George Nelson.....
From the EOG group. Rosewood sliding doors instead of the usual black.
There were a couple very similar recently, one on Craigslist, the other eBay:
http://cgi.ebay.com/George-Nelson-Herman-Miller-Modern-Credenza-Eames-er...

More photos of interior.
it's pretty close actually....
http://cgi.ebay.com/George-Nelson-Herman-Miller-Modern-Credenza-Eames-er...

Another on 1st dibs
The previous examples I showed had 2 finger pulls per sliding door, while yours only had one.
This variation also has just one pull on its door. It also has round legs instead of square like the others.

All of these credenzas are so beautiful
and elegant.
It just shows how nice furniture made for the office can fit in to your house.

And. . .
the bottom aluminum (?) extrusion on Builder's piece extends to the lower edge of the credenza, unlike the other ones shown ?
All are desirable, in my book.

And another
with veneered doors, but in walnut.
Buy-it-now, pretty good price.
http://cgi.ebay.com/George-Nelson-Herman-Miller-Modern-EOG-Credenza-Eame...

Ebay
I saw that one on Ebay and almost used "buy it now", but the shipping is going to make it too expensive for it's condition.

well , if it s true.. i m...
well , if it s true.. i m going to make a bid on ebay..
rosewood veneer.. for $200 starting price..
thanks very much to the_beloved..you are the best!