I found an interesting tidbit tucked into a book about JFK Jr.  Kennedy's September 1996 wedding made news mainly because it was successfully done in total secrecy.  Kennedy chose a barren barrier reef island located 20 miles off the coast of Georgia to get married on. And to help identify possible intruders, each registered guest was given an indian head nickel by security to keep with them at all times. The security detail would therefore be able to challenge anyone at the ceremony or reception by asking to show their nickel. The book didn't go into too much detail, and I wonder if the nickels were all of a certain date or mintmark for added security. Also, it makes one wonder what became of the nickels. Did guests keep them as a memento? Or did many of them eventually make their way into dealer's junk boxes where they sit to this day, along with their secret history?