Quote:
Originally Posted by grantman
Question: How can one tell if the SD mark is Schupo Dusseldorf or Schupo Dresden? I ask because I have a 1921 DWM marked S.D.
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Surviving Prussian Interior Ministry documents from 1922 and 1932 Specify
S.D. as the Schupo of the Prusiian administrative district of Düsseldorf.