Stamps feel almost novel today, but they aren't that old of an invention. The first American stamps weren't issued until 1847, but it wasn't long before people grew fascinated by the different colors ...

NEW YORK -- A 1-cent postage stamp from a 19th century British colony in South America has become the world's most valuable stamp - again. The 1856 British Guiana One-Cent Magenta sold Tuesday at ...

Stamp collecting feels like something your grandpa would wax poetic about, but it's cooler than you think. While the odds that you'll come across one of these record-breakingly rare and valuable ...