Which advertising campaign holds the Guinness World Record for the 'Longest-running advertising campaign'?

Test your knowledge about extraordinary marketing achievements that have made it into the Guinness World Records! The retail and product world isn't just about sales—it's also about creating memorable campaigns and brand experiences that sometimes reach record-breaking status. See if you can identify which famous advertising campaign holds a prestigious world record.

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De Beers' 'A Diamond is Forever' (1948-present)
Energizer Bunny 'Still Going' (1989-present)
Coca-Cola's 'Santa Claus' (1931-present)
Lifebuoy soap's 'Lifebuoy for Health' (1894-present)