What stamp is this?
Answer: Nicaragua 1911 Railroad Stamp: The Railway Tickets of Nicaragua were repurposed in 1911 to be used initially as postal stamps as well as revenue uses.Listed under Scott # 279.
That looks like it was from a "Ripley's Believe It Or Not" newspaper Sunday comic section.
Actually this image came from Stamps, weekly philatelic magazine, that ran a series of inserts in the early 1930s about "odd" tales of postage stamps. At the time it reflected the diverse nature of stamp collecting.