I just looked at the mark with my USB microscope. It does appear to be the same mark. I can't post a pic yet, my computer recognizes my microscope as a webcam, so it's in video format. If I can figure out how to take a picture with it I'll post it.

Since the gun's serial number probably places it in 1870-1872 range, is it reasonable to think the Georg bought the British parts kit and had it finished by Sauer? Or, was it possible Daly arranged it without any Lindner involvement?
Thanks
Ken

I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.