The Postage Stamp Guide (PSG) is a valuable resource for stamp collectors and for those who want to learn more about the stories behind many stamps. PSG aims to provide a way for stamp collectors to determine the age of their stamps and to find a way to organize them, whether it be by year or series.
Use PSG to search for specific stamps, learn about the story behind each stamp, and determine which stamps you are missing in your collection. PSG also contains pricing details for each stamp. Sign up for an account to help determine the current value of your stamp collection.