Hi Herb,
if you go to the Technical Info. section and go to the "Markings" sub-folder, Ed Tinker has started a very good photo study of suffix markings from actual LF member guns...
Peter's luger suffix is more consistent with the "m" photos posted (even with lots of variations) than the "n" photos posted.
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />