I received my ZT 561 last week. Possibly overall the best knife I ve ever gotten. I like it even more than my 551,which I carry a lot. But it is so nice I m reluctant to use it for EDC. Then I find out the serial number is 0006! Now I m thinking that if the 560/561 becomes a classic, this knife is a collectible. If I keep it stored, then I have to buy another to use. Would anybody keep this knife as a safe queen? F and F is excellent except for a slightly dull blade.