To me it looks like a used knife. And Philwar is right someone messed around with that lanyard hole and created all that damage. A lanyard hole made by a drill press will leave sharpend edges, not a ragged one like that.
The axis lock (or any of its variations) lock back, work well for lefties. The spyderco compression lock I find to be lefty friendly. I tend to stay away from liner and frame locks since they are too inconvenient for me to use.