These advertisements are part of a Geigy campaign from 1965. They are all letterpress illustrations by Fred Troller. Each version pairs a striking figure with a related slogan and encourages you to “Ring Geigy for service.” I probably would have called these guys up even if I had no idea what “service” they could provide.
I like Winkreative’s identity for Porter Airlines for similar reasons. I wouldn’t stack one against the other by any means, but the use flat colors, stark figures, and limited perspective at least puts them in the same inspiration folder for me. (And the panda is awesome)