Mickey probably appeared in more advertisements than any other athlete during his time. Below are a few commercials of his that I found.
The first commercial was taken very early in Mickey's career; I am going to guess around 1952 or 1953. It has no sound, but is still fun to watch:
https://www.youtube.com/watch?v=VaUuiTeAA3U
Here is another one from Camels:
https://www.youtube.com/watch?v=gUyoqoHSbfk
Karo Syrup (1956)
https://www.youtube.com/watch?v=xKosOAd256w
Post Cereal (1961)
https://www.youtube.com/watch?v=YOKKZrjscUA
I love this next commercial by Lifebuoy Soap (1966) because his beautiful wife Merlyn is in it:
https://www.youtube.com/watch?v=pImji-SAv6Q
Edwards & Hanly Commercial (1967)
https://www.youtube.com/watch?v=K2GD2rQN4d0
And the last video (Maypo - 1969) happens to be my favorite one:
https://www.youtube.com/watch?v=O3rM2PLajEY
Mantle, Unitas, Robertson and Chamberlain in the same advertisement - just amazing!