Le Chevalier d'Harmental #[nn]

This appears to be a book cover rather than a comic book issue — the image shows a plain literary paperback edition of Le trou de l'enfer by Dumas, published under the "Ressources" imprint (Paris/Genève), with a presentation by Nicolas Wagner. The minimalist cream cover bears no comic artwork or sequential-art elements, making it difficult to write a comics catalog blurb grounded in what is literally visible here. If you have the correct cover image for Le Chevalier d'Harmental (1980, Éditions Horus), I'd be happy to craft a blurb from that!