USPS unveiled the “Forever Stamp” at the National Postal Forum today , the premier trade show for advertising, marketing and mailing executives. The Stamp features a Liberty Bell image and the word “forever.”

Postmaster General John E. Potter said “the Liberty Bell was selected because it resonates as one of the nation’s most prominent and recognizable symbols associated with American independence.”

The stamp will be good for mailing one-ounce First-Class letters anytime in the future — regardless of price changes. The Forever stamp goes on sale April 12 at 41 cents. Customers can begin using the stamp when postage changes May 14.

“Beginning April, 12, the Forever stamp will be available at ATMs in sheetlets of 18, in booklets of 20 through www.usps.com, by calling 1-800-STAMP-24, through Post Office vending machines, at Automated Postal Centers and in Post Office lobbies nationwide. Once prices change May 14, the Forever stamp will remain on sale at the 41-cent First-Class one-ounce letter price until the next price change. The Forever stamp will then be available at the new price.”

source: USPS