Your next pocket knife should be a Case! Come in and see what we have that will look good in your collection or as a special gift for someone. Case Knives have been Hand-Crafted in the USA since 1889. Each knife takes over 160 manufacturing processes to complete. The Tested XX is a symbol of Case's commitment to quality which can be traced back to the early days of Case when blades were tempered and tested not just once (X), but twice (XX).