This remarkable advertising poster is a prime example of early 20th-century promotional art. Created by Marcellin Auzolle, it captures the vibrant spirit and narrative quality of period advertising. The central motif, a majestic and colorful rooster, is linked to the iconic product "Le bon gruyère", evoking an image of rustic authenticity and quality. The work not only showcases Auzolle's artistic skill but also reflects the evolution of advertising media in France. The details of the lithograph, printed by Établissements B. Schwab Ainé S.A., are executed with great technical mastery. It stands as a fascinating example of commercial art that merges visual storytelling with marketing objectives.