The American Society of Check Collectors maintains and updates a Security Printers Guide. This guide was originally developed by the ASCC based on three-letter printer codes developed by Bill Castenholz, and is used in this document with Bill’s permission.
The ASCC makes this guide available to all interested parties via this website. Anyone may view and/or download it.
The two files posted below are Adobe® Acrobat® files and require Adobe® Acrobat® Reader to view, print or download. They are both searchable using the search capability in Adobe® Acrobat® Reader.