Roy, very good, thanks. I knew they were not cheating devices, but I never knew what a cuff holder was and how they worked, or that cuffs were detachable in the old days (to go with dirty shirts!). I made my post because I never saw that store display before.

Here is a shorter link from your page (don't know why yours is so long). After clicking the link, you have to scroll down some on the page:
http://cardshark-online.blogspot.com/2010_11_01_archive.html

Robert