> In 2021 the U.S. Postal Service released a Forever stamp with Wu's portrait. > As the name suggests, Forever Stamps can be used to mail a one-ounce letter re

> In 2021 the U.S. Postal Service released a Forever stamp with Wu's portrait. > As the name suggests, Forever Stamps can be used to mail a one-ounce letter regardless of when the stamps are purchased or used and no matter how prices may change in the future. Forever Stamps are always sold at the same price as a regular First-Class Mail stamp.[0] [0]: https://about.usps.com/news/fact-sheets/forever-stamp-facts.htm#:~:text=As%20the%20name%20suggests%2C%20Forever,regular%20First%2DClass%20Mail%20stamp https://about.usps.com/news/fact-sheets/forever-stamp-facts.....