How many of you guys put serial numbers on you knives? I started at the first of this year when I moved into my new shop. It sure makes it easy to keep track of things. I log the numbers in my book of who it went to, steel type, handle material, selling price, ect. I also belive that a serial number on a fine hand crafted knife makes it even more unique. It could also possibly aid a customer in recovering a valuable knife that has been stolen. Thoughts?