File talk:S-Bahn Köln logo.svg

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I doubt this sign is "the official logo" of the southern part of de:S-Bahn Rhein-Ruhr, at least there ain't no db-sites showing this sign (at least as far as I looked through those sites). Can anyone prove that this is actually an official logo? Cheers a×p_de^Hello! 07:25, 27 September 2015 (UTC)