A philatelist's prize is a STAMP, which is a small piece of paper that has been issued by a government or other official entity and is typically decorated with an image or design. Stamps are used to pay for postage on mail and can be collected as a hobby. Philately, the study and collection of stamps, is a popular pastime and many people take great pride in their collections. A philatelist's prize is usually a rare or valuable STAMP that they have acquired.