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Colorized view of the steamer « Invicta Sous-Pression » moored at the quay in Boulogne-sur-Mer, with passengers and crew on the deck and tram rails in the foreground. Reverse: green 5-cent postage stamp, postmark from Calais, handwritten address to Madame de Breaux in Amiens, and printed text indicating that correspondence on this side is not accepted by all countries.