U.S. Stamp Packets are the easiest and least expensive method to begin or add stamps to a collection. The stamp packets are usually mixtures of off-paper used stamps of 50, 100, 200 each or more. These in turn are categorized into Commemoratives, Postage Due, Se-Tenants, Airmail, or a mixture of all. Offered is a selection of topical packets from the United States. Forum topic.