"If you ask me Gus, I Like Rheingold Best" beer coaster. Rheingold Beer, Liebmann Breweries Inc., New York. Illustration by O. Soglow (1933). via Bart Solenthaler on flickr
The images are all really sharp and clear, they're put together almost like a collage of african animals and plants. The red flowers have a drip effect and they stand out and bring life to the poster.