I love the use of a desaturated palette, simple icons and symbols without loss of communication in regards to the function of ideology behind the image.
I found these on brainpickings. The full set can be found on flickr.
http://www.visualcomplexity.com
Not just the overall impact of the adverts appeal to me, but the stock they were printed on adds to the impact. The days when science adverts explained their purpose, unlike today where associative and lifestyle marketing follow the trend of technological gadget commodity culture.