Kellogg's Rice Krispies - Sooty's Marble and Spaceship Game (1957, UK)

Back in 1957, Kellogg's added 2 stars from The Sooty Show, Harry Corbett and Sooty to promote Marble and Spaceship game (6 marbles included) inside Kellogg's Rice Krispies, where Sooty plays "Race to the Moon," where he ends up winning by having a marble landed to the top of the moon in 100 miles.
As Sooty's popularity continue to rise throughout the 1960s and 1970s, he was a mascot for Puffa Puffa Rice and Sugar Stars while Sweep on the other hand was a mascot for Coco Pops (known as Coco Krispies during that time.)
Made by the JWT agency.
Found on History of Advertising Trust website.
Sooty belongs to The Corbett Family, Richard Cadell, ITV, FremantleMedia, and formerly the BBC.