Postal Museum Exhibits World’s Most Valuable Stamp

By Editorial Team on June 17, 2015

The Smithsonian’s National Postal Museum is now exhibiting the British Guiana One-Cent Magenta, the world’s most valuable stamp. The stamp will be on display at the William H. Gross Stamp Gallery located at 2 Massachusetts Avenue NE until November 2017. Read more here.

(Image courtesy of the William. H. Gross Stamp Gallery)