How do I find out if one of my stamps is valuable?

We suggest visiting your local library and finding the most recent Scott Catalogue version they have available.  They’re usually found in the reference section.  If you’re unable to find your stamp in the Scott Catalogue, contact the American Stamp Dealers Association for information on a dealer in your area who might be able to examine the stamp and help you identify it.  You can also take advantage of Mystic’s stamp ID service.  Visit to learn more.