Is this a Gilbert Rohde cloud table, or a knock-off?  

I saw this coffee table at a local antique mall and was wondering if it is a genuine "cloud" table by Gilbert Rohde, made by Herman Miller in the '30's or '40's. It appears to be ebonized wood, with three tapered scalloped legs and a larger scalloped center column to hold the heavy glass upper tier. The lower tier appears to be heavy wood ply. There is no maker's mark. The disc fitting that attaches to the center column at the center of the glass tier is brass. Is it Rohde? Any info would be helpful. Thanks!
<img class="wpforo-default-image-attach