Dwight,
I asked the same question in a posting two days ago and did not get any response. [img]frown.gif[/img]
Hope you do better than I did.
In looking through all my Luger reference books, I found several pictures of 1916 and 1917 Navy Lugers, some with concentric ring magazines and some with plain. There does not seem to be any real pattern, and several of the 1917 Navys had the concentric ring magazine.
I could not find any definitive statement regarding the use of the concentric ring type.
I have purchased an unmarked concentric ring magazine from Tom Heller which has the Navy Crown/M marking but no number. It appears that these might have been produced by DWM as armorer replacements.
Luke
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"Peace, if possible; truth, at any cost." . . . Martin Luther
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