What's interesting about the ad is that Kellogg's was basically staging a tryout to see who would secure a place on the Sugar Frosted Flakes box as its mascot: Tony the Tiger (and son) or Katy the Kangaroo. It would seem that Tony had the advantage, since the ad copy was already stressing the clever G-r-r-reat tagline.
Anyway, the ad directed the Journal reader to "ask your grocer for a free sample," and then to "get ready to buy whole box featuring Tony, the tiger, or Katy, the kangaroo."
Obviously, Tony won the gig and Katy hopped right out of the picture.
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I've written a lot about cereal on this blog. There have been several posts dedicated to Kellogg's and one post specifically about Tony, which included a Journal ad that appeared a month after the one shown above.
I still start my day with a bowl of cereal. Currently I'm working on a box of Rice Krispies, as opposed to my normal geezer diet of Spoon Sized Shredded Wheat.