Bob, My THEORY on the lack of DWM marks on Erfurts is as follows, both Erfurt and Spandau are Imperial "Gewerfabrik" Erfurt had both manufacturing and proofing/acceptance facilities on site. DWM was a civilian manufacturer, part of the huge Loewe weapons manufacturing complex. At least some DWM Lugers were delivered to Spandau for acceptance/proofing. Lugers proofed at Spabdau after 1916 were barrel proofed with a Spandau Adler stamp in the Erfurt style. Sometime before that a Erfurt stle Proof eagle shows up on the DWM breechblock. Were all military DWMs proofed at Spandau? Don't know, they were all delivered there. May Tom A can chime in on the 1914 style Navy. There is no reason to believe any Erfurts were proofed at DWM. I doubt any Erfurts were ever proofed at Spandau, thus no DWM style proof adlers on Erfurts.
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