The "Inverted Jenny," 1918, one of the rarest and most valuable stamps ... had started printing more than two million new 24-cent stamps with a special design celebrating the launch of the world ...

Japan Post will issue the first new 1-yen (1 cent) postage stamp in 70 years on April 14, featuring its bear mascot character, Posukuma. The mascot’s name combines the Japanese word “kuma ...

Most collectors are happy to pursue their hobby knowing they are unlikely to ever lay their hands on a 1933 Double Eagle gold coin or the “inverted Jenny plate block” of stamps from 1918 ...