51,000 were printed, and fewer than 150 are still around. The stamp is worth an estimated $547,464 adjusted for inflation ...

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 ...

Known as the world’s most valuable and rare stamp, this unique piece was produced during a stamp shortage in British Guiana. Only one copy is known to exist, discovered by a 12-year-old Scottish boy ...

"In 1867 and 1868, the United States produced some of the most expensive postage stamps in the world - the grills. Based on a patent by Charles Steel, they were an attempt to produce stamps that could ...