This book on Banknote Replacements was just received in the mail today.I was able to help the author out with editing a few chapters, so I had a glimpse of it beforehand, but the final result turned out just great! One of the things I wan't expecting was the full color examples of the banknotes in the catalog.
The author, Ali Mehilba, has assigned a unique reference number (MWR) in conjunction with the SCWPM number, dates, prefixes, printers, and even more categories, to help in ascertaining the replacement indicators for the banknotes. If you are at all a collector of replacement banknotes, you'll want to have a copy of this book.