I certainly don't have the experience of others here yet, but if what I have learned is correct then the heel pattern and that "M 9" writing inside are dead giveaways that these are NOT CJ, although I cannot remember which makers those things designate. I am sure those with more knowledge than I will chime in shortly.
The "recent images in this thread " is quite interesting. one of my co workers came into my office and was a little shocked. Had to explain that it was just a reamer... you know, used to make holes bigger.