Things You'll Need
Instructions
Research a stamp or coin to determine its history, circulation, condition and rarity. These are all important elements in determining the value of a stamp or coin. Detailed information, photographs and pricing information can be be found in reference books such as “Stamp Collectors Encyclopedia,” by Richard John Sutton, and “The Insider’s Guide to U.S. Coin Values 2010,” by Scott A. Travers.
Take the coin or stamp to an authorized expert for an appraisal. Work with dealers who are associated with a professional organization to ensure a fair and professional transaction. View a list of coin dealers associated with the American Numismatic Association on its website at Money.org; a list of stamp dealers associated with the American Stamp Dealers Association is available at ASDAOnline.com.
View online auction websites such as eBay.com and Bonanzle.com and search for similar items to see their current market values. While prices and values can vary, these websites can provide you with an average value for your stamp or coin and offer a sense of market demand.
Go to collector shows, antique stores and hobby stores that deal in coins and stamps. There you'll find similar items and their retail values. Speak with experts and other enthusiasts about the items in your collection and ask for their opinions of the items' value.
Check out enthusiast websites, such as StampCenter.com and MyCoinCollecting.com, which often have forums and classified sections. These resources may offer information, plus access to other experts and collectors who can provide an estimated value for your items.