The story
Founded by Karl Gerstner and Markus Kutter in 1959.1
Private company
GGK is an advertising agency based in Basel, founded in 1959.1 It was founded by Markus Kutter and Karl Gerstner.1
GGK (Gerstner, Gredinger + Kutter) war eine Schweizer Werbeagentur, die von 1959 bis 1990 existierte und insbesondere in den 1960er und 1970er Jahren mit damals neuartigen Werbe-Ideen international erfolgreich war.2 From the German Wikipedia, CC BY-SA 4.0
Last updated Oct 21, 2026.
Founded by Karl Gerstner and Markus Kutter in 1959.1
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