Authentic Noguchi Coffee Table  

I'd say that it's a knock-off.
The wood base looks a slight bit mis-shapen...but I could be wrong. Measure it. The glass should be 3/4 inch thick, the height 15 3/4 inches, and the top 50 inches by 30 inches...unless it's a very old edition, then the glass would be 7/8ths inch thick. The birch base was made between 1947 and 1955 (but some limited edition birch models were made in 1980).
Best of luck,
Aunt Mark
edited to correct poore speilingh.

I think Mark may
be right. While the relevant bits and bumps are present, the proportions of the wood parts seems off: the large down-pointing element is broader and less pointy than what I see in Googled photos of genuine tables. Unless your photo is squashed a bit vertically -- somehow -- I have to reserve judgement on this one, lovely though it is (the birch or maple looks very nice). Check the measurements . . .

To check your camera
and the photo-transmission process, photograph a perfect circle -- a round tray, standing on edge, say -- and place it here in the same way as your table photos.
(For the first time in history we have ways -- intentional or not -- of distorting an image easily; just think of all the possible settings for your TV picture, and how many of them involve rearranging the proportions of the rectangle . . .)

Thank you Aunt Mark and SDR...
Thank you Aunt Mark and SDR for your input, it's greatly appreciated

Not helpful at all -...
Not helpful at all - apologies - but this thread made me think of this contrarian mouth piece...
*edit: repost, just saw this in the other coffee table thread
http://fuckyournoguchicoffeetable.tumblr.com/