Postally unused. Title reads: "Grenoble 1925 - International Exposition. Hydroelectric Power and Tourism. Merchant Aviation Section with Passenger". Attractive full-size cutaway of an airship gondola but more likely a passenger aircraft cabin mockup. Two aircrew behind windscreens on the top of the section, a passenger seated in a front cabin; a many-chair lounge in the back. Precious image...I wish I had this mockup in my man cave! Very good codnition.