HI GUYS, A new friend showed me something pretty cool. The $5,000 Colombian pesos bank note has the image of a Colombian Poet from the XIX century: Jose Asunción Silva. As I was told, he—like many—loved to drink during the night. He killed himself one night, by shooting his own heart. But that's not the cool thing; the cool thing is that when you fold the bank note a certain way a wine glass appears, and when you fold it another way a heart appears instead. Two images hidden in the bank note in honor to his story.
My friend learned about the hidden images during a visit to the Coin Museum in Colombia. Here's a web page about the bank note and its hidden images... it includes pictures. The content is in Spanish: http://www.fusagasuga-cundinamarca.gov.co/publicaciones.php?id=42776&dPrint=1 I thought you guys might like the bank note since you have to fold to see the hidden images. Cheers!
