Hi Flatcat,
thank you very much for telling the full SN.
As far as the missing “Zusatzsicherung” (ZS) is concerned: I’m confused, really I am. Are you sure? Please check the enclosed image showing a 1919 with and without the ZS.
Well, of course there is no reason not to believe you, but it would be the first RFV marked Sauer 1919 not having the ZS. Seems, yours slipped through….
Best regards
Martin
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