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Humorous illustration of a second lieutenant boasting about his youth to a woman, with printed text: « How, at your age, do you still court women! — At my age! But I am always twenty! A second lieutenant's build, a back tested by all trials, a young heart, supple and tireless legs. Urodonal has given me back my youth. » Reverse: handwritten text dated September 11, 1915, addressed to Louis, with signature of Rosalie, and note « Not all countries accept correspondence on the front (Check with the post office) ».