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 ...

The U.S. Postal Service (USPS ... directional points to rose petals. The stamp’s design is based on a 32-point compass rose drawn in 1794 by 10-year-old Lucia Wadsworth, niece of poet Henry ...