I recently picked up a used Large Plain Left-Handed Sebenza (my first)and have a couple of questions. The inside of the lockside scale is engraved with B99. Does this mean any thing? Also, the knife is well used and has little anodization left on the thumb lug. Are only the thumb lugs anodized or are the backspacer disks anodized as well? Finally, the knife came with a 12/2002 DOB certificate and box, but has the old style clip without the "w". Is this possible? It does have the cutout under the clip. On the DOB certificate it does not state that knife is left-handed. I wonder if I recieved the incorrect box and paperwork. Regardless, I am very pleased with the knife and got it for a good price. I plan to carry it for an EDC, so the box and paperwork matter little, but I am curious. I have been looking for a used Large Plain Left-Handed Sebenza for awhile, but they are hard to come by. My BM's are now getting a rest. Thanks for any input.