I thought this was a fun little newspaper clipping. One of the hundreds of magic tricks someone took the time to cut and save- a lot of these are paper clipped together and tucked into envelopes. There are dozens of clippings of brain teasers and magic tricks from the newspaper in the cigar boxes.
I know my Grandfather loved to clip articles to share; he would often send me articles of interest in his letters to me. I wonder if he taught himself any of these tricks.