Marble Stand for supporting a piece of paper

This Japanese product provides a simple way of supporting a piece of paper. The stand contains a marble which can move but which cannot fall out because it is trapped by the clear plastic stand. When a piece of paper is pushed down into the back of the stand, behind the marble, the marble grips it and keeps it in place. The second image shows a postcard being gripped by the stand. The logo and letters JFE on the front of the stand refer to the Japanese JFE Engineering Corporation. It appears to be a promotional gift made by Daishinkohsan Co. Ltd. Patent pending.