The Mason-Dixon Knife Collectors Club was organized in the mid-1980’s.   The Mason-Dixon  line was surveyed in the 1700’s and separated Pennyslvania and Maryland.  Historically, however it would become the line that separated the north and the south.  The club has created ten Case pocket knives that I have found.  The latest documented knife is from 2008.  Of the ten knives, the largest edition had a hundred, but most were 50 or less.  All the knives have both American and Confederate flags, reflecting the north-south historical split.  There is also  multi-color blade work on these rare beauties.