The way the legs meet at the top center is already an indicator that it is not the Tugendhat/Barcelona table by Mies Van der Rohe.
Also a quick look at Knoll.com would have answered your question right away.
http://www.knoll.com/product/barcelona-table
It is still a good usefull table base though regardless of who made it unless it is for flipping, then it will not get as much.
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