Postage stamps are popular collectors’ items. Philatelists around the world are always searching for rare stamps. And if you are a wealthy stamp collector eager to spend huge amount for enhancing your postage stamp collection with these antique stamps, here is a list of the world’s most valuable postage stamps that have fetched tens of thousands of dollars at the auctions. The most expensive postage stamp in the world is the world’s first postage stamp called Penny Black. The stamp printed in 1840 in Britain is valued at over $5 million. Only two pieces of the early stamp are currently available. To know more about the most expensive postage stamps in the world, visit the following link.