Kellogg's Corn Flakes 90th Anniversary Collectible Cereal Bowls Vintage Ad Bowls

Kellogg's Corn Flakes 90th Anniversary Cereal Bowls - Set of Four. 1906-1996 Commemorative Limited Edition stoneware bowls with advertisements from the early days of the Kellogg Company. 6.75" x 1.75". These were sold to me as NWOT. I don't see signs of use and the Certificate of Authenticity is included. The 4 designs are as follows: #1 - "I Eat It by the Trunk-full too" ad from 1911 #2 - "A Good Start in the Morning" ad from 1913 #3 - "The sweetheart of the corn" ad from 1907 #4 - "Stuffed" from the 1914 ad