Most US 3-cent stamps are worth less than $50, and they usually sell for between 65 and 90 percent of their face value. The only exceptions are rare stamps, like a 3-cent stamp from 1851 that shows a side view of George Washington.
If a rare 3-cent stamp is in perfect condition, it can sell for anywhere from $40 to thousands of dollars. In 2014, old 3-cent stamps are often sold for less than their face value.
This is because the U.S. post office makes a lot of 3-cent stamps. Numerous 3-cent stamps are available to collectors. Some people buy old 3-cent stamps for postage because they can be used to mail letters.