Don, I have seen maybe 10 in the process of restoring around 300 shooter Lugers. That will give you a rough percentage from one source. I did not think to keep track of them and I dont take a lot of pictures anymore. Sorry I was not more help.

BTW, I know Hub has fixed some of them the way John Sabato mentioned. Also, when he makes the Baby Lugers he cuts out a portion of the frame all across it and rewelds it using special mandrels/heat sinks to align the frame/magazine well. The cut section actually rusts blues pretty good.