Only one stamp of that issue is known to exist today. It is the most valuable stamp in the world. In 1873, a 14-year-old Georgetown boy named Vernon Vaughan found a frayed magenta 1¢ British ...
The most expensive copy ever sold went for $138,000 in April 2021 ... The copy that sold in 2017 was only a 5.5-graded one, and even though it had a couple of stamps on the cover, it still fetched ...