A Guide Book of United States Paper Money.Standard Catalog of United States Paper Money.Find the one that best matches your note and voila - your question is answered. All you need to do is find the right page! Books will give you a value range for a variety of conditions. They typically break down note values by note type, denomination, series, and FRB/block letter (or star note). Put bluntly, if you don't want to learn or do any research of your own, this is your best option.Įvery currency collector should own at least one reference book - they are the simplest way to get an idea of your note's value. Reference books condense the knowledge and expertise of collectors with dozens of years of experience. Luckily it is not impossible to put in some time and effort to research on your own. It's extremely difficult to answer because there are many factors to consider. What is it worth?' is the most common question I get in emails and comments.