Phosphide rodenticide brand "KONTRA Wühlmaustöter" of company Georg Vogger, Geisenfeld, Oberbayern, Germany. Cardboard can with content. Made before 1940.
<a href="//commons.wikimedia.org/wiki/User:Bullenw%C3%A4chter" title="User:Bullenwächter">User:Bullenwächter</a>
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Scan from the original work