This is a 6-inch "wet to stick" label from France. They were obviously used to promote the film, but I have no idea if they are unique to France.

Added 2022-05-08

This is an oversized French flyer that came as two pieces of paper. Put together, one side of the pages forms a giant poster of the film poster.

Added 2022-02-05

Les Fiches de Monsieur Cinéma are French movie cards printed on thin cardstock a little over 5x8 inches in size. The front features photos from the film, while the back contains information about the film, including the cast credits, a synopsis, etc. Cards are still created for films today. More recent cards can be purchased on the official website.

Chirashi are flyers used to promote upcoming films in Japanese theaters. They are usually miniature versions of the movie posters. This is a Chirashi for King Kong. It measures roughly 7.5 x 10.25 inches.

A Japanese theater ticket, with a Jim Beam ad on the Rear! It measures roughly 2.75 x 5.75 inches.

Added 2022-07-17

This is a flyer from the former Yugoslavia. It measures roughly 5.5x8 inches and is printed on the thinnest paper I've ever seen. It's like tissue paper, but maybe not even that thick.

This appears to the source image for a Spanish newspaper ad for King Kong. The artist is JANO. This image was found on ComicArtFans.com.