The "Fr. #" designator is a catalog number used to identify U.S. currency. These numbers come from the book Paper Money of the United States, by Robert Friedberg.

Although there are several different reference books that attempt to catalog U.S. currency with a wide range of numbering systems, the Friedberg numbering system seems to be the most widely used and recognized among U.S. currency enthusiasts.



This number is supplied for collector and cataloger reference only and would have little meaning to the average visitor.