Auction house Director Charles Shreve called Gross' collection, "without question, the most significant and most valuable collection of United States stamps formed this past half century." ...

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 ...

Nearly 162,000 counterfeit US “forever” stamps shipped from China were recently seized at a Chicago mail facility by US Border Patrol agents, authorities said. Anti-terrorism contraband agents ...