Here is an an example of a colorful and humoristic postcard from the early 1950s illustrated by Pierre Ryreze and edited by d'Art BelFrance. It depicts a meeting of neighbors. One of them is asking "Are you moving around?" In reply he gets this: "No, I have mounted a wood gas generator to my lighter!!"
The postcard design no. is 508. It was printed by FAP in France.