The One dollar Federal Reserve Note – District Set with Stars and Varieties set type, was just updated to add the missing mule (m) and back plate error (bpe) notes to the set. The last change added more note slots count and was change to 704 within the set. As more information and research work is done, the number of notes within this set will be added. Also some of the mule note are BEP sheet note and would need to be added as part of this set and are some of rarest. You will find most of information in Robert Azpiazu book, “Collector’s Guide to Modern Federal Reserve Notes – Series 1963 thru 2009” from Whitman Publishing, it’s also list all of series. This would help you the collector with notes that may not be listed within sets and help you fill in missing notes with in your collection. The SSFRN One Dollar set is one that will change with each new series. As I noted before this is like a penny collection that will change with time or a living set and sum of the later notes can be pick up at your local bank.