Which of these advertising slogans holds the Guinness World Record for being the longest continuously used slogan in advertising history?

The world of advertising has seen some incredible campaigns that have broken records for their effectiveness, longevity, and cultural impact. Behind many of these record-breaking campaigns are slogans that have become embedded in our collective consciousness. Test your knowledge about which advertising slogan holds the Guinness World Record for the longest-running campaign still in use today!

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De Beers - 'A Diamond is Forever' (since 1948)
Coca-Cola - 'It's The Real Thing' (since 1942)
Maxwell House - 'Good to the Last Drop' (since 1915)
Wheaties - 'Breakfast of Champions' (since 1933)