"Zombie" two-sided file or more precisely fiche, as they are referred to in France.
13 x 20.5 cm
From my personal collection.
(Click on the pictures to review them in their native resolution.)
To quote this article
Danny Duchesneau@2022, "Dawn of the Dead Fiche Monsieur Cinéma issued in France by publisher Images et Loisirs in 1996", Dawn of the Dead Collector's Blog, published on 29 January 2022.