it means that they checked the knife and everything about it twice. So it should never have any mistakes. It turned into the logo for case knives today.
Ebay is a good place to purchase a case of XX knives. One can purchase them either new or used for a good price. They are also available from both Amazon and Walmart.
See this website: http://www.allaboutpocketknives.com/price_guide/wr_case_xx/knives-65.php
Special Factory Order. This denotes your knife is of a limited run that was ordered outside their normal production runs.
That is a Case Mini Trapper Knife. The CV stands for Chrome Vanadium. That is the non-stainless steel blade. Some prefer it to SS blades as it can be easier to sharpen.
do you mean numerical quantity or number of different patterns?
XX = 20
The Case Copperlock started in 1997.
XX means twenty.
XX is the Roman numeral for 20
20
I think your are thinking of the Case RussLock knife.