What is it about the table that makes you think it might be by Jens Risom?
You can probably get a definitive answer from JensRisom.org:
http://www.jensrisom.org
This table is not in the 1955 catalog. As Risom had (has) a long continuous design career, he has many pieces from the 60s and 70s of which I am not familiar. While there are similarities between Risom details and your table, other designers/manufacturers also used similar details.
Nice table whoever designed it. Two questions: 1) is that a solid walnut top? 2) what parts do you believe are mahogany?
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