The first known piece of mail sent with a prepaid, adhesive stamp could sell for as much as $2.5 million. Sotheby’s will offer up the 183-year-old envelope during a live auction in New York on ...
The first known piece of mail sent using a postage stamp is about to hit the auction block at Sotheby's New York. The Penny Black stamp dates to May 2, 1840. It features the young Queen Victoria ...