any isolation platform sleuths out there?

Hi all - I came across an isolation platform in storage, under a box.  I don't think I've looked at it for 20 years, at least.  It's 3/4" x 19" x 15", black, with almost a herringbone pattern on it, below the finish.  it's actually lots of little tiny grey and black rectangles.  if I remember correctly, it's made with some aerospace polymer/material.  for the life of me, I can't remember the brand.  any thoughts?  20-25 years ago you'd see these here on audiogon from time to time, but my interweb searches now have revealed nothing.  any help would be appreciated.  ct